Vocabulary Cards
911 cards available.
C1 noun
robot-assisted procedures
ロボット支援手術
Meaning
Medical operations performed with the help of robotic systems to enhance precision and control.
Example
Robot-assisted procedures reduce human error.
C1 noun
robotic surgery
ロボット手術
Meaning
Surgery performed with the assistance of robotic systems to enhance precision and reduce invasiveness.
Example
Robotic surgery enhances precision in complex procedures.
B2 adjective
robust
ロバスト
Meaning
Strong and healthy; vigorous; able to withstand or overcome adverse conditions.
Example
The robust infrastructure ensures reliable communication.
A2 noun
rock
岩石
Meaning
a large, solid piece of mineral matter
Example
The mountain was made of solid rock.
C1 noun
Rock Salt
岩塩
Meaning
natural salt crystals formed from evaporated ancient seas; unrefined salt
Example
Rock salt is considered healthier than table salt.
B1 noun, verb
rocket
幸せ
Meaning
a missile or vehicle propelled by a rocket engine; to increase or move very quickly
Example
The company’s profits rocketed after the new product launch.
B2 adjective
Rocky
岩だらけの; 不安定な; 難しい
Meaning
full of rocks; unsteady; difficult
Example
The rocky path made hiking difficult for the tourists.
C2 adjective
rococo
ロココ
Meaning
characterized by ornate detail and elaborate decoration, especially in art, architecture, and design
Example
The palace was decorated in a lavish rococo style.
B2 noun
rod
金属または木材の細長い棒
Meaning
a thin straight bar, especially of metal or wood
Example
He used an iron rod to support the structure.
C1 noun
rodent
齧歯類
Meaning
a small mammal such as a mouse, rat, or squirrel, characterized by constantly growing incisors
Example
The farmer set traps to catch the rodents in his barn.
C1 adjective
Roguish
いたずらな; 狡猾な
Meaning
mischievous; playfully dishonest
Example
His roguish smile suggested he was up to some mischief.
C2 verb
roil
かき乱す
Meaning
to make a liquid muddy or disturbed; to cause agitation or disorder
Example
The constant protests roiled the city streets.
C2 verb
roister
大声で祝い
Meaning
to revel noisily; to engage in loud, boisterous celebration
Example
The fans roistered in the streets after the victory.
A2 noun
role
役割
Meaning
a part or function of something
Example
Her role in the project was crucial.
B1 noun
Roles
役割
Meaning
A person's or thing's function in a particular situation.
Example
Defined roles improve team performance.
A2 verb
roll
転がる
Meaning
to move by turning over and over on an axis
Example
She rolled the ball down the hill.
B2 adjective
rolling
転がる
Meaning
moving in gentle undulations; moving forward by turning over and over
Example
They drove through the rolling hills of the countryside.
C1 noun
Rolling board
ローリングボード
Meaning
a flat wooden or marble surface used for rolling out dough
Example
She placed the dough on the rolling board.
B2 noun
Rolling pin
めん棒
Meaning
a cylindrical tool used for rolling out dough or pastry
Example
Roll the dough flat with a rolling pin.
B1 adjective, noun
roman
ローマの / 古代ローマの市民
Meaning
relating to Rome or its people; a citizen of ancient Rome
Example
The Roman Empire influenced much of modern civilization.
B1 noun
Romance
ロマンス
Meaning
a feeling of excitement and mystery associated with love; a love affair or relationship
Example
Their romance began when they met at the university library.
B1 adjective
Romantic
ロマンチック
Meaning
relating to love; idealistic; dreamy
Example
They enjoyed a romantic dinner by candlelight.
C1 verb
romp
楽しく遊ぶ
Meaning
to play or move in a lively, carefree, and energetic way
Example
The children romped happily in the garden.
C2 noun
rondo
音楽作品（繰り返しのテーマを持つ）
Meaning
a musical composition with a recurring leading theme
Example
The pianist ended the recital with a lively rondo.