英単語辞書 | 単語の意味、定義、例文
a fruit that is typically round and orange in color
"She ate an orange for breakfast."
a large arboreal ape with long reddish hair, long arms, and hooked hands and feet, native to Borneo and Sumatra
"The orangutan swings gracefully through the forest canopy."
Spoken rather than written; relating to the mouth
"The student had to give an oral presentation."
Resembling an oracle; giving wise, mysterious, or prophetic statements
"Her oracular words left the audience deep in thought."
A person or source considered to provide wise and insightful advice or prophecy.
"In ancient Greece, people visited the oracle at Delphi for guidance."
A creative work, especially a large and important piece of music or art.
"The composer considered the symphony his greatest opus."
Ostentatiously rich, luxurious, or lavish.
"They hosted an opulent wedding with gold decorations."
Great wealth, luxury, or abundance.
"The palace displayed a level of opulence that amazed the visitors."
The practice or profession of examining the eyes and prescribing corrective lenses.
"She studied optometry at the university to become an eye specialist."
A healthcare professional who examines eyes and prescribes corrective lenses.
"The optometrist prescribed new glasses for her."
Not required; left to personal choice.
"The dress code for the party is optional."
A choice or possibility available among alternatives.
"You have the option to pay by card or cash."
Made as effective, perfect, or functional as possible.
"Optimized irrigation techniques conserve water in farming."
Make the best or most effective use of a situation, opportunity, or resource.
"They optimized the software for faster performance."
The action of making the best or most effective use of a situation or resource.
"The company focused on optimization of resources to maximize profits."
hopeful and confident about the future
"She is optimistic about the success of her new project."
Hopefulness and confidence about the future.
"Her optimism kept the team motivated during tough times."
In the most effective or efficient way possible.
"Tasks should be allocated optimally for maximum output."
The best or most favorable temperature for a particular purpose
"Winter provides optimal temperature for farming."
Best or most favorable; ideal.
"This diet plan provides the optimal balance of nutrients."
The branch of physics dealing with light and vision.
"She studied optics to understand how lenses work."
The practice of taking advantage of opportunities regardless of principles or ethics.
"His decision was driven by opportunism, not values."
an act or instance of beginning something
"The opening of the new store was a huge success."
in a way that is not secret or hidden
"He spoke openly about his past mistakes."
a dramatic performance in which the actors sing most of their lines
"We watched a beautiful opera at the theater last night."
to control the functioning of a machine, system, or business
"She learned how to operate the new machine."
to control or manage the functioning of something
"The company has been operating in this market for five years."
an act or process of functioning or operating
"The hospital performed a successful operation."
related to or engaged in the operation of something
"The team is ready for the operational phase of the project."
functioning, having effect, or relating to a secret agent or worker
"The new law is now operative across the country."
a person who operates equipment, a business, or controls something
"The machine operator ensured that everything ran smoothly."
a short opera with light and humorous themes
"The theater staged a famous operetta by Gilbert and Sullivan."
to express an opinion or belief
"The professor opined that the policy would fail."
A belief, judgment, or viewpoint about something, not necessarily based on fact.
"Everyone is entitled to their own opinion."
A person who competes against or disagrees with another.
"The boxer defeated his opponent in the final round."
Happening at a suitable or convenient time.
"She arrived at an opportune moment to help."
related to or used in seeing or sight
"The optical illusion fooled everyone at the exhibition."
Relating to the eye or vision.
"The optic nerve carries signals from the eye to the brain."
Harsh criticism or public disgrace.
"The scandal brought opprobrium on the politician."
Expressing strong criticism or scorn.
"He made opprobrious remarks about his opponent."
Harsh and authoritarian; overwhelming; causing distress; tyrannical;
"The oppressive heat made it difficult to work outside during the summer."
cruel or unjust treatment or exercise of authority; the state of being subject to harsh treatment
"The people fought against political oppression."
A set of circumstances that makes it possible to do something.
"Investing in emerging markets provides new opportunities."
A favorable chance or set of circumstances that makes it possible to do something.
"She seized the opportunity to study abroad."
to disagree with or fight against something
"He opposed the new policy at the meeting."
