Translation guide
The English word "indispensable" means absolutely necessary or essential. In Japanese, this concept is expressed through various adjectives, verbs, and set phrases depending on the context and level of formality.
Expressing that something or someone is so important that you cannot do without it.
The most common and versatile word for 'indispensable'. Used in both formal and everyday contexts. Often appears as 不可欠な or 不可欠だ.
Water is indispensable for life.
He is an indispensable part of this project.
A stronger, emphatic version of 不可欠, meaning 'absolutely essential'. Often used in formal writing or speeches.
Education is absolutely indispensable for a nation's development.
A very common and natural phrase meaning 'cannot do without'. Used in everyday conversation. It literally means 'if it doesn't exist, it won't do'.
Smartphones are now indispensable in daily life.
Means 'cannot be omitted' or 'essential'. Slightly less formal than 不可欠 but very common in both spoken and written Japanese.
This is an indispensable seasoning for this dish.
Often used for requirements, mandatory items, or prerequisites. Common in technical or official contexts.
English is indispensable for this job.
Describing a person whose presence or contribution is vital.
不可欠 is more formal and often used in writing or official contexts. なくてはならない is more colloquial and natural in everyday speech. Both are widely understood and can be used interchangeably in many situations.
Do not directly translate 'indispensable' as 不可欠な in all cases. Sometimes a phrase like なくてはならない or 欠かせない sounds more natural depending on the context.
Good communication is indispensable for a healthy relationship.
This tool is indispensable for my work.
She is an indispensable player for the team.