Translation guide
The English adverb "chiefly" is used to indicate that something is mainly or primarily the case. In Japanese, this idea is expressed through adverbs, particles, and sentence patterns that highlight the main element among others.
To say that something is mostly or primarily the case, or that something consists mainly of a particular element.
The most common and neutral adverb meaning 'mainly' or 'primarily'. Suitable for both spoken and written Japanese.
To emphasize that one thing is more important than others, or that something is particularly true.
Literally 'more than anything', used to stress that something is the most important factor.
When 'chiefly' means 'especially' or 'above all', using 主に can sound unnatural. Instead, use 何よりも or とりわけ to emphasize importance rather than proportion.
この地域は主に農業で成り立っている。
This region is chiefly supported by agriculture.
His success is chiefly the result of hard work.
A slightly more formal synonym of 主に, often used in written or formal contexts.
The conference chiefly discussed environmental issues.
A pattern meaning 'the main thing is ~'. Used to state what is primary.
The tourists are chiefly Chinese.
Means 'mostly' or 'for the most part'. Often used when referring to a large portion of something, but can sound slightly literary.
The people were chiefly in favor of the plan.
Health is chiefly important.
Means 'especially' or 'above all'. Often used to single out one element among many.
The food at this restaurant is chiefly delicious in its desserts.