Translation guide
The adverb "primarily" indicates that something is mainly or mostly the case, or that the main purpose or reason for something is as stated. In Japanese, this is expressed through adverbs, set phrases, and sentence patterns that emphasize the main element.
To say that something is mostly true or consists mainly of something, with other elements being secondary.
The most common and neutral way to say 'primarily' or 'mainly'. Used in both spoken and written Japanese.
This region primarily relies on agriculture.
His job primarily involves data entry.
Slightly more formal than 主に. Often used in written language or formal speech.
This project is primarily handled by young employees.
Literally 'for the most part', emphasizes the large proportion. Used when you want to stress that something is mostly the case.
The problem has been primarily resolved.
Means 'mostly' or 'for the most part'. Often used in the phrase 大方の〜 (most of). Somewhat literary.
Most people are unaware of that fact.
To indicate that the primary reason or purpose for something is as stated.
Pattern using 主に with ために to express 'primarily for the purpose of'. The 〜 part is a verb or noun.
This meeting is held primarily for information sharing.
Literally 'the primary purpose is to...'. A more explicit way to state the main objective.
To emphasize that something is the most important consideration, above all else.
Both mean 'mainly' or 'primarily', but 主に is more common in everyday speech, while 主として is slightly more formal and often appears in written language or formal presentations. In casual conversation, 主に is preferred.
English uses 'primarily' as a flexible adverb, but Japanese often expresses the same idea through phrases like 主に or by restructuring the sentence. Directly translating 'primarily' as 第一に in all contexts can sound unnatural. Choose the expression based on whether you mean 'mainly', 'for the most part', or 'first and foremost'.
The company primarily focuses on software development.
This medicine is used primarily to relieve pain.
The primary purpose of this system is to enhance safety.