A1 noun
C1 noun /ˈkærət/
karat
Meaning
A unit for measuring the purity of gold, with 24 karats being pure gold.
Example
The ring was made of 18-karat gold.
B2 noun /ˈker.ə.siːn/
Kerosene
Meaning
a combustible hydrocarbon liquid widely used as a fuel in lamps and heating systems
Example
The old lamp burned kerosene to provide light during power outages.
C2 noun /ˈkɜːrtʃɪf/
kerchief
Meaning
a piece of cloth worn around the head or neck
Example
She wore a red kerchief on her head.
B1 noun /kɪk/
Kick
Meaning
a blow or forceful thrust with the foot; a sudden strong feeling of excitement
Example
The soccer player scored a goal with a powerful kick from outside the penalty area.
A2 noun
Kite
B2 verb /nɪt/
knit
Meaning
To make clothes or fabric by interlocking loops of yarn with needles.
Example
She loves to knit scarves for her friends during the winter.
C2 noun /kɛn/
ken
Meaning
one's range of knowledge or understanding
Example
Quantum physics is beyond my ken.
A2 noun /ˈkɪt.ən/
Kitten
Meaning
a young cat
Example
The little kitten loves to play with yarn balls.
C2 noun /ˈkɪləˌliːtər/
kiloliter
Meaning
a unit of capacity equal to 1,000 liters
Example
The tank can hold up to three kiloliters of water.
C1 noun /ˈkɪŋ.fɪʃ.ər/
King-Fisher
Meaning
a small bird with bright blue and orange feathers that catches fish by diving into water
Example
The colorful kingfisher dove into the pond to catch a fish.
C2 noun /ˌkiː.təʊˈdʒen.ɪ.sɪs/
ketogenesis
Meaning
The metabolic process by which the liver produces ketones from fatty acids, providing an alternative energy source during low carbohydrate availability.
Example
Ketogenesis occurs during fasting or low-carb diets.
C2 noun /kɪln/
kiln
Meaning
a furnace or oven for burning, baking, or drying, especially one for firing pottery or bricks
Example
The potter placed the clay pots into the kiln for firing.
C2 noun /ˌklɛptəˈmeɪniæk/
kleptomaniac
Meaning
A person with an irresistible urge to steal, typically without need or profit.
Example
The kleptomaniac was caught shoplifting again.
C1 noun /nɒb/
Knob
Meaning
a rounded handle on a door or drawer; a small rounded switch on a machine
Example
He turned the brass knob to open the old wooden door.
B2 noun
Kitchen garden
C2 noun /ˈkedʒ.ə.riː/
Kedgeree
Meaning
a European dish of cooked rice, fish, and hard-boiled eggs, originally from India
Example
The breakfast menu featured traditional kedgeree with smoked haddock and eggs.
C2 noun /nɛl/
knell
Meaning
The sound of a bell, especially when rung solemnly for a death or funeral; a signal of the end or failure of something.
Example
The knell of the church bell echoed through the valley at dusk.
A2 noun /ˈkiːbɔːrd/
keyboard
Meaning
a set of keys used to operate a computer, typewriter, or similar device for inputting text and commands
Example
She typed the report quickly on her keyboard.
A2 noun /ˈket.əl/
Kettle
Meaning
a container used for boiling water, typically with a lid, spout, and handle
Example
The electric kettle whistled when the water reached boiling point.
C1 noun /ˈkɜːrnəl/
kernel
Meaning
the central, most important part of something; the edible part of a nut or seed
Example
The kernel of the argument was about fairness.
C1 noun /næk/
knack
Meaning
a natural skill or ability; a special talent for doing something easily
Example
She has a knack for making people feel comfortable.
A2 noun
King
C2 noun /noʊl koʊl/
Knol khol
Meaning
round bulbous vegetable from cabbage family with pale green color and mild taste
Example
Knol khol can be eaten raw in salads or cooked in curries.
C2 adjective /ˈnaɪt.li/
Knightly
Meaning
having the characteristics of a knight; chivalrous; noble and brave
Example
He showed knightly courage in defending the innocent.
C2 noun /ˈkɪzmɛt/
kismet
Meaning
Destiny or fate.
Example
Meeting her on that day felt like pure kismet.
B1 noun /kɪt/
kit
Meaning
a set of tools, equipment, or materials used for a particular purpose
Example
He bought a first aid kit for emergencies.
B1 noun /ˈkɪləɡræm/
kilogram
Meaning
the base unit of mass in the metric system equal to 1,000 grams
Example
The bag of rice weighs five kilograms.
C2 noun /noʊl/
Knoll
Meaning
a small rounded hill or mound
Example
The old oak tree stood majestically on top of the grassy knoll.
A2 verb /kɪl/
kill
Meaning
to cause the death of; to end life
Example
The hunter killed the deer.
A2 noun /ˈkɪndərˌɡɑːrtn/
kindergarten
Meaning
a school or class for young children, typically between the ages of four and six
Example
She enrolled her child in kindergarten to prepare for elementary school.
A1 verb /noʊ/
know
Meaning
to have information about something; to be familiar with
Example
I know the answer to this question.
A2 noun /nɒk/
Knock
Meaning
a sudden sharp blow; the sound of striking something
Example
There was a loud knock at the door late at night.
C1 adjective /kɪˈnɛtɪk/
kinetic
Meaning
Relating to or resulting from motion.
Example
Kinetic energy increases as the object moves faster.
B2 noun /ˈkɪlɪŋ/
killing
Meaning
the act of causing death, especially deliberately
Example
The movie depicts the brutal killing of the villagers.
B1 noun
Kindness
A2 noun
Kiss
C1 noun /ˈkɪləˌwɒt/
kilowatt
Meaning
a unit of power equal to 1,000 watts
Example
The generator produces ten kilowatts of electricity.
A2 noun /ˈketʃ.ʌp/
Ketch-up
Meaning
a thick sauce made chiefly from tomatoes, vinegar, and spices
Example
She squeezed some ketchup on her french fries before eating them.
C2 noun /ˈkɪldʒɔɪ/
killjoy
Meaning
a person who spoils the fun or enjoyment of others
Example
Don’t be a killjoy at the party.
B1 adjective /kiːn/
Keen
Meaning
sharp; acute; intense; eager
Example
She has a keen interest in science.
C1 noun
Kin
B1 noun /ˈkɪlər/
killer
Meaning
A person or thing that kills.
Example
The police caught the killer last night.
B1 noun; gerund /ˈnɪtɪŋ/
knitting
Meaning
the craft or activity of making fabric by interlocking loops of yarn with needles; the act of forming something closely or firmly together
Example
She spends her evenings knitting scarves for her family.
B1 noun /ˈkiː.wi/
Kiwi
Meaning
a small brown fruit with green flesh and black seeds; a flightless bird from New Zealand
Example
I love eating fresh kiwi for breakfast.
B1 adverb; adjective /ˈkaɪndli/
kindly
Meaning
in a kind or gentle manner; showing kindness or goodwill
Example
She kindly helped the old man cross the street.
B2 adjective /ˈnɑː.lɪ.dʒə.bəl/
Knowledgeable
Meaning
having extensive knowledge; well-informed; educated
Example
She is very knowledgeable about ancient history.
A2 adjective /kəˈriːən/
korean
Meaning
relating to Korea, its people, language, or culture
Example
We went to a Korean restaurant for dinner.
C1 noun, adjective /ˈkɪndrəd/
kindred
Meaning
A person's relatives or family; similar in nature or character.
Example
They discovered kindred spirits in each other.
B1 noun /naɪt/
Knight
Meaning
a man given a rank of honor by a British king or queen; a medieval warrior on horseback
Example
The brave knight rescued the princess from the dragon's castle.
C2 noun
Kinsfolk
B1 noun /kɪˈlɒmɪtər/ or /ˈkɪləˌmiːtər/
kilometer
Meaning
a unit of length equal to 1,000 meters
Example
The village is about five kilometers away from the town.
C1 noun /kəˈlaɪdəˌskoʊp/
kaleidoscope
Meaning
A toy or instrument with mirrors and colored pieces that create changing patterns when rotated; also used metaphorically for a constantly changing sequence of patterns or elements.
Example
The city lights turned into a kaleidoscope of colors as the festival began.
A2 noun /niː/
Knee
Meaning
the joint connecting the thigh and the lower leg in humans
Example
He fell and scraped his knee on the pavement.
C1 noun /kɪˈməʊnoʊ/
kimono
Meaning
a traditional Japanese robe with wide sleeves, tied with a sash
Example
She wore a beautiful silk kimono at the ceremony.
C1 noun /ˈkiːpˌseɪk/
keepsake
Meaning
An object kept as a reminder of a person, place, or event.
Example
She gave me a small locket as a keepsake of our friendship.
B2 adjective /ˈnoʊ.ɪŋ/
Knowing
Meaning
showing awareness or understanding; perceptive; shrewd
Example
She gave him a knowing smile when he mentioned the secret.
A1 noun
Kind
A2 adjective /noʊn/
known
Meaning
recognized or familiar; something that is identified or acknowledged
Example
He is a well-known actor in the country.
B2 adjective /ˌkaɪnd ˈhɑːrtɪd/
kind-hearted
Meaning
Having a kind and generous nature; showing compassion and care for others.
Example
She is known as a kind-hearted teacher who always helps her students.
A2 noun /ˈnɒl.ɪdʒ/
knowledge
Meaning
Facts, information, and skills acquired through experience or education.
Example
Knowledge of the universe is expanding through research.
C2 noun /kɪθ/
kith
Meaning
Friends, acquaintances, and relations.
Example
He invited all his kith and kin to the wedding.
C1 noun /ˈken.əl/
Kennel
Meaning
a small shelter for a dog; an establishment for the breeding or boarding of dogs
Example
The dog slept comfortably in his wooden kennel in the backyard.
A1 noun /kiːp/
Keep
Meaning
food and other things necessary for living; the strongest part of a castle
Example
He worked hard to earn his keep and support his family.
C2 noun /ˈkɪŋɡlɪŋ/
kingling
Meaning
A minor or petty king; a ruler of small importance.
Example
The kingling demanded respect from his people despite his small realm.
C1 verb /ˈkɪndəl/
kindle
Meaning
to light a fire; to arouse or inspire
Example
She kindled the campfire with dry wood.
C2 verb /ˌkaʊˈtaʊ/
kowtow
Meaning
To act in an excessively subservient or obedient manner.
Example
He refused to kowtow to the unreasonable demands.
B2 noun /ˈkɪdni/
Kidney
Meaning
either of a pair of organs that filter waste products from the blood and produce urine
Example
Drinking plenty of water helps keep your kidneys healthy.
C2 adjective /ˈnɒti/
knotty
Meaning
Complicated, difficult to solve or full of knots.
Example
He faced a knotty legal issue.
C2 noun /ˈnɪk.næk/
knickknack
Meaning
A small decorative object, especially in a house.
Example
The shelf was full of little knickknacks collected from their travels.
B2 verb /ˈkɪdnæp/
kidnap
Meaning
to take someone away illegally by force
Example
The criminals kidnapped the wealthy businessman.
B2 noun /nɒt/
Knot
Meaning
a fastening made by tying a piece of string, rope, or something similar; a hard mass in wood
Example
The sailor tied a secure knot to anchor the boat safely.
A2 noun /ˌkæŋ.ɡəˈruː/
Kangaroo
Meaning
a large marsupial from Australia that moves by hopping on its strong hind legs
Example
The kangaroo jumped high with its joey in its pouch.
C1 noun ˈkiː.stəʊn ˈspiː.ʃiːz
keystone species
Meaning
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Example
Wolves are a keystone species that regulate prey populations.
C1 adjective /ˈnæk.ərd/
Knackered
Meaning
extremely tired; exhausted
Example
I'm absolutely knackered after working all day.
C1 noun /ˈnaɪt.hʊd/
knighthood
Meaning
The rank or dignity of a knight, or the ceremony of conferring knighthood.
Example
He was honored with knighthood for his contributions to science.
B2 verb /niːl/
kneel
Meaning
to go down on one's knees; to rest on the knees
Example
The knight knelt before the king.
A1 noun /kiː/
Key
Meaning
a small piece of shaped metal used to operate a lock; something that provides a means of access
Example
She lost her house key and couldn't get inside until the locksmith arrived.
B1 noun
Kingdom
C2 noun /ˈneɪvəri/
knavery
Meaning
dishonest or deceitful behavior; trickery
Example
The politician’s knavery was exposed by the media.
C2 noun /kəˈbɑːdi/
kabadi
Meaning
a person who collects and sells scrap or recyclable materials, especially in South Asia
Example
The kabadi came every week to collect old newspapers and bottles.
C2 noun /kəˈrɒn.də/
Karonda
Meaning
a small dark purple berry-like fruit that is sour and used in pickles
Example
Karonda is often used to make pickles and preserves.
C1 adverb /ˈnoʊɪŋli/
knowingly
Meaning
in a way that shows you are aware of something; intentionally
Example
She knowingly kept the secret from her friends.
C2 adjective /ˈkɪŋ.ki/
Kinky
Meaning
having or involving unconventional sexual practices; having tight curls or bends
Example
His kinky hair made him look unique.
B2 noun /ˈkiː.pər/
Keeper
Meaning
a person whose job it is to guard or take care of something or someone; a goalkeeper
Example
The zoo keeper fed the animals every morning at eight o'clock.
A2 noun /naɪf/
Knife
Meaning
a cutting instrument with a sharp blade
Example
She used a sharp knife to cut the vegetables for dinner.
C1 noun /ˈkuːdɒs/
kudos
Meaning
Praise and honor received for an achievement.
Example
She received kudos for her excellent performance.
A2 verb /kɪd/
kid
Meaning
to joke or tease; to speak in a playful manner
Example
I'm just kidding with you.
B2 noun /ˈkiːɒsk/
kiosk
Meaning
A small, open-fronted hut or cubicle from which newspapers, refreshments, tickets, etc., are sold.
Example
She bought a bottle of water from the kiosk near the station.
C2 noun /ˈkɪŋʃɪp/
kingship
Meaning
The position, dignity, or authority of a king.
Example
The king’s advisors often reminded him of the responsibilities of kingship.
C1 verb /niːd/
knead
Meaning
to work dough or clay into a uniform mixture by pressing, folding, and stretching
Example
She kneads the dough until it becomes smooth.
C2 noun /kəˈdʌm.bə/
Kadamba
Meaning
A tropical tree with round, fragrant orange flowers, sacred in Hindu culture and associated with Lord Krishna
Example
The kadamba tree is mentioned frequently in ancient Indian poetry.
C2 noun /neɪv/
Knave
Meaning
a dishonest person, especially a man; a playing card with a picture of a male servant
Example
The knave tried to cheat the old woman out of her savings.