English Vocabulary Dictionary | Word Meanings, Definitions & Examples
CEFR Level
being the best, final, or most extreme
"Success is the ultimate goal of hard work."
in the end, after everything else
"Ultimately, we decided to go ahead with the project."
the state of being unable to do something; incapacity
"His unability to solve the problem caused delays in the project."
not satisfactory or allowable
"The behavior displayed by the employee was completely unacceptable."
Not feeling fear; brave or courageous
"She walked into the dark room, unafraid of what might be inside."
Fully in agreement; with everyone sharing the same opinion.
"The jury reached a unanimous verdict."
with the agreement of all people involved; without opposition
"The committee unanimously agreed to the proposal."
Not equipped with or carrying weapons
"The police found the suspect unarmed during the search."
The state of being not available or not accessible.
"The unavailability of the manager caused a delay in the project."
Not able to be obtained, reached, or used; not present or accessible.
"The manager was unavailable to take calls during the meeting."
Impossible to avoid or prevent.
"Delays were unavoidable due to heavy rain."
not knowing or realizing; having no knowledge of something
"She was completely unaware of the danger."
not balanced; lacking stability or equilibrium; mentally unstable
"The unbalanced table kept wobbling."
Too difficult or unpleasant to endure.
"The heat was unbearable in the afternoon."
not defeated; having never lost; undefeated
"The team remains unbeaten this season."
Not showing prejudice; impartial and fair.
"The report gave an unbiased view of the situation."
not able to be broken or damaged; very strong and durable
"Their friendship formed an unbreakable bond."
in a way that shows doubt or lack of certainty
"She glanced uncertainly at the complicated instructions."
the state of being unsure or not knowing what will happen
"Economic uncertainty affects business investments."
not able to be changed or altered; fixed and permanent
"The laws of physics are unchangeable principles that govern the universe."
remaining the same over time; not changing
"Her love for her family was unchanging throughout the years."
rare, unusual, or remarkable
"It is uncommon to see snow in this region."
not subject to any conditions; complete and absolute
"She offered her unconditional support to her friend in need."
not confirmed as true or definite; not verified or substantiated
"The report remains unconfirmed until we receive official verification."
not awake and aware of surroundings
"He was knocked unconscious by the fall."
without being aware of one's actions or surroundings
"She unconsciously tapped her foot to the rhythm of the music."
the state of being unaware of and unable to respond to one's surroundings
"After the accident, he was in a state of unconsciousness for several hours."
not restrained or managed; lacking control
"The wildfire spread in an uncontrolled manner, causing widespread damage."
not based on or conforming to what is generally done or believed
"Her unconventional approach to teaching inspired her students to think creatively."
failing to persuade or impress; not believable or credible
"His excuse for being late was completely unconvincing."
not willing to help or work with others; unhelpful
"The witness was uncooperative and refused to answer questions."
lacking coordination, not well-organized or clumsy in movement
"His movements were uncoordinated, making him prone to accidents."
to reveal something that was hidden or secret
"The investigation uncovered new evidence."
not having made a decision; uncertain
"She was undecided about which college to attend."
Impossible to deny; clearly true or real.
"Her talent is undeniable."
Clothing worn beneath outer clothes, such as underwear or lingerie
"He folded his underclothes neatly before packing them."
To judge something as less important or smaller than it really is.
"Never underestimate the power of teamwork."
to go through something, especially something unpleasant or difficult
"She had to undergo surgery to recover."
a student who has not yet earned a bachelor's degree
"She is an undergraduate studying computer science."
basic or hidden but important; forming the foundation of something
"The underlying reason for the conflict was never addressed."
to gradually weaken or damage something or someone
"Constant criticism can undermine a child's confidence."
to emphasize or highlight something
"The incident underscored the need for better safety measures."
To agree to do or begin to do something important or difficult.
"She undertook the responsibility of organizing the event."
A task, project, or responsibility that someone agrees to do.
"Starting a new company is a difficult undertaking."
not wanted or wished for; harmful or unpleasant
"The new policy had several undesirable consequences."
not yet developed; immature or primitive
"The undeveloped land was later turned into a park."
not interrupted or interfered with; calm and peaceful
"She slept undisturbed for eight hours."
whole; complete; not separated or split
"The team showed undivided attention to the coach's instructions."
without a doubt, certainly
"He is undoubtedly the best player on the team."
worried; anxious; uncomfortable; restless
"She felt uneasy about walking alone at night."