B2 noun ニュートラル

crucial

/ˈkruː.ʃəl/

Extremely important or necessary, especially because it will affect the success or failure of something. It is often used to describe a decision, a piece of information, or a specific stage in a process that is decisive.

例文

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1

Drinking enough water is crucial for maintaining your energy levels during the day.

Staying hydrated is extremely important for keeping your energy up.

2

The witness's testimony proved crucial to the prosecution's case.

The statement from the witness was a deciding factor for the legal team.

3

It's crucial that we get there on time or we'll miss the start of the movie.

It is really important that we arrive punctually so we don't miss anything.

語族

名詞
cruciality
副詞
crucially
形容詞
crucial
関連
crux
💡

覚え方のコツ

Think of the word 'crux' or a 'crossroads'. When you are at a crossroads, the path you choose is 'crucial' because it determines where you will end up.

クイックテスト

The goalkeeper made a ____ save in the final minute, ensuring his team won the championship.

正解!

正解は: crucial

例文

1

Drinking enough water is crucial for maintaining your energy levels during the day.

everyday

Staying hydrated is extremely important for keeping your energy up.

2

The witness's testimony proved crucial to the prosecution's case.

formal

The statement from the witness was a deciding factor for the legal team.

3

It's crucial that we get there on time or we'll miss the start of the movie.

informal

It is really important that we arrive punctually so we don't miss anything.

4

Further research is crucial to understanding the long-term effects of the climate shift.

academic

More study is necessary to comprehend the lasting impacts of climate change.

5

The CEO stated that securing this partnership is crucial for the company's Q4 growth.

business

The leader said this deal is essential for the business to grow in the final quarter.

語族

名詞
cruciality
副詞
crucially
形容詞
crucial
関連
crux

よく使う組み合わせ

crucial factor a decisive element
crucial role a vital part played in a situation
crucial importance of the highest significance
crucial stage a very important phase in a process
crucial decision a choice that determines the final outcome

よく使うフレーズ

the crux of the matter

the most important part of a problem or argument

crucial turning point

a moment when a significant change occurs

it is crucial that

it is of absolute necessity that

よく混同される語

crucial vs critical

While often synonyms, 'critical' can also mean 'disapproving' or 'relating to a crisis', whereas 'crucial' focuses specifically on importance to an outcome.

crucial vs important

'Important' is a general term; 'crucial' is much stronger and implies that failure is likely if this specific thing is missing.

📝

使い方のコツ

Use 'crucial' when you want to emphasize that something is not just 'good to have' but is a 'must-have' for success. It is frequently followed by the prepositions 'to' or 'for'.

⚠️

よくある間違い

Learners sometimes use 'very crucial' or 'more crucial'. Since 'crucial' is an extreme adjective (meaning 'of the utmost importance'), it is technically non-gradable and shouldn't be modified by 'very'.

💡

覚え方のコツ

Think of the word 'crux' or a 'crossroads'. When you are at a crossroads, the path you choose is 'crucial' because it determines where you will end up.

📖

語源

Derived from the Latin 'crux' (cross), originally referring to a cross-shaped mark or a crossroads where a decisive choice must be made.

文法パターン

crucial to + noun/ing crucial for + noun it is crucial that + subject + [base verb/subjunctive]

クイックテスト

The goalkeeper made a ____ save in the final minute, ensuring his team won the championship.

正解!

正解は: crucial

関連単語

to

A1

Used to indicate the place, person, or thing that someone or something moves toward. It can also mark the recipient of an action or the limit of a range.

and

A1

A primary conjunction used to connect words, phrases, or clauses that are grammatically equal. It indicates addition, a sequence of events, or a relationship between two things.

a

A1

A word used before a singular noun that is not specific or is being mentioned for the first time. It is used only before words that begin with a consonant sound to indicate one of something.

that

A1

This word is a demonstrative pronoun used to indicate a specific person, object, or idea that is further away in space or time from the speaker. It is also used to refer back to something that has already been mentioned or to introduce a clause that identifies something.

I

A1

The pronoun 'I' is used by a speaker or writer to refer to themselves as the subject of a verb. It is the first-person singular subject pronoun in English and is always capitalized regardless of its position in a sentence.

for

A1

Used to show who is intended to have or use something, or to explain the purpose or reason for an action. It is also frequently used to indicate a specific duration of time.

not

A1

A function word used to express negation or denial. It is primarily used to make a sentence or phrase negative, often following an auxiliary verb or the verb 'to be'.

with

A1

A preposition used to indicate that people or things are together, in the same place, or performing an action together. It can also describe the instrument used to perform an action or a characteristic that someone or something has.

he

A1

A pronoun used to refer to a male person or animal that has already been mentioned or is easily identified. It functions as the subject of a sentence.

you

A1

Used to refer to the person or people that the speaker is addressing. It is the second-person pronoun used for both singular and plural subjects and objects.

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