先に・曩に|さきにsakini[0]heiban (flat)

JLPT N1approx.Common
Which spelling to use
先に先に is the most common and recommended form for beginners; use it when writing or typing this word, including when it means “previously,” “before,” “earlier,” or “formerly.”
曩に曩に is rarely used, so learners will seldom encounter this kanji-and-kana spelling; recognize it as an alternative form, but choose 先に instead when producing the word.
Definitions
  1. adverbpreviously; before; earlier; formerly; recently
  2. adverbfirst; before (something or someone else); ahead (of); earlier
    私が先さきにそこへ着つくよ。↗
    I'll get there before you will.
  3. adverbbeforehand; in advance; ahead of time
    The information was given away to the newspaper prior to the announcement.
Synonyms & antonyms
  • Synonym以前いぜんNeutralRefers to the past in general (「以前住んでいた」) and is common in speech; 「先に」 can also mean going ahead of others, as in 「先に行く」.
  • SynonymかねてNeutralMeans 'already; for quite a while' (「かねてからの夢」), stressing that something has been so since long ago.
  • Synonym先立ってさきだってNeutralCovers 'prior to (an event)' and 'the other day' (「開会に先立って」).
  • RelatedかつてWrittenMeans 'once; formerly' (「かつての名選手」); mostly written prose, and with a negative it means 'never'.
  • Related前もってまえもってNeutralMeans 'in advance; beforehand' (「前もって連絡する」), stressing preparation made ahead of time.
  • RelatedあらかじめWrittenMeans 'beforehand; in advance' (「あらかじめご了承ください」); on the formal side.
  • AntonymのちにNeutralMeans 'later on' (「後に有名になる」); the opposite of 「先に」.
  • Antonym後であとでNeutralMeans 'afterwards; later' (「後で電話する」); the opposite of 「先に」.

Use 「先に」 for going before others or for something earlier (「お先に失礼します」「先に述べた通り」). For the past in general say 「以前」, for in advance 「前もって」 or 「あらかじめ」, for once/formerly 「かつて」. The opposites are 「後で」 and 「後に」.

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

Japanese definitions
  1. これより前まえに。以前いぜんに。かつて。
Kanji in this word
English equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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