一に|いつにitsuni

1. adverbsolely; entirely; only; or
2. adverbsharing; togetherusu. as 〜を一にする

• SynonymもっぱらWrittenWritten. Means 'exclusively, chiefly', as in 「もっぱら読書」— an action is concentrated on one thing; 「一に」 typically says something depends entirely on.
• SynonymひたすらWrittenWritten. Read 「ひたすら」; means single-mindedly devoting oneself to an action. 「一に」 says the cause or key lies entirely in something.
• SynonymひとえにWrittenWritten. Says something is wholly due to something, often in thanks like 「偏に皆様のおかげ」; the closest match to 「一に」.
• SynonymただにWrittenWritten. Means 'merely, only', often in the pattern 「ただに〜のみならず」 'not only…'; 「一に」 stresses that something lies entirely in one factor.

Use 「一に」 in written prose to say something depends entirely on one thing, as in 「成功は一に努力にかかる」. For thanks, prefer 「偏に」; for 'exclusively, chiefly' use 「専ら」; for single-minded devotion use 「ひたすら」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. ひとつには。あるいは。また。
2. まったく。ひとえに。