時|じji[1]atamadaka (head-high)

1. suffixhour; o'clock
   私は１０時じごろ寝ねついた。↗

   I went to sleep about 10 o'clock.
2. suffix, no-adjective(specified) time; when ...; during ...

• Synonym際さいNeutralA noun for an edge or the moment something arrives, as in 「別れ際」, and mostly used as a suffix; 時 is the plain suffix for clock times and moments.
• Synonym折おりNeutralA noun for an occasion or moment, as in 「折を見て」; it carries a formal, stately tone, unlike 時, the neutral suffix for hours and times.
• Related潮時しおどきNeutralA noun for the right moment to act, often the time to quit or bow out, as in 「引き際の潮時」; 時 is a suffix for clock times or a given moment.
• Related時機じきNeutralA noun for the opportune moment to act, as in 「時機を逸する」; it stresses when to do something, unlike 時, which marks clock time or a point in time.
• Related時節じせつNeutralA noun for a season or the times, also for circumstances or an opening, as in 「時節柄」 and 「時節到来」; 時 just marks an hour or moment.
• RelatedひとときNeutralA noun for a brief spell or stretch of time, as in 「楽しいひととき」, or a period in the past; 時 as a suffix gives hours or points in time.
• Related期間きかんNeutralA noun for a span between a start and an end, as in 「有効期間」; it denotes a stretch of time, while 時 marks an hour or a specific moment.
• Related時代じだいNeutralA noun for an era or a stage of life, as in 「江戸時代」 and 「学生時代」; it covers long stretches, unlike 時, which pins down an hour or moment.
• Related好機こうきNeutralA noun for a favorable chance, as in 「好機を逃す」; it highlights opportunity, whereas 時 as a suffix only marks an hour or a point in time.
• Related場合ばあいNeutralA noun for a case or circumstance, as in 「雨の場合」; it frames conditional situations, while 時 marks clock times or when something happens.
• Related年月としつきNeutralA native-Japanese noun for months and years, as in 「長い年月」; it evokes a long passage of time, unlike 時, which gives hours or moments.
• Related期きNeutralA noun and suffix for a numbered period or term, as in 「第三期」; it labels stages or installments, while 時 gives clock times and moments.
• Related時宜じぎNeutralA noun for what the occasion demands, as in 「時宜を得た」; it leans written and formal, unlike 時, the plain suffix for hours and moments.
• Related歳月さいげつNeutralA written-flavored noun for the passing years, as in 「歳月人を待たず」; it evokes time flowing by, while 時 marks hours or specific moments.
• Related時期じきNeutralA noun for a period or phase, as in 「この時期」; it denotes a stretch of time, whereas 時 as a suffix gives clock times or a moment.
• Related際きわNeutralA noun for an edge or the moment something arrives, as in 「別れ際」, and mostly used as a suffix; 時 is the plain suffix for clock times and moments.

「時（じ）」attaches to numbers or nouns to give a clock time or a specific moment or occasion, as in 「三時」 and 「出発時」. For the right moment to act, use 「時機」 or 「潮時」; for a stretch of time, use 「時期」 or 「期間」.

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

1. （ジ）時刻じこくの単位たんい。1日ついたちを24等分とうぶんするか、午前ごぜん・午後ごごを12等分とうぶんして、その順番じゅんばんを示しめす。
2. （ジ）動作どうさや行為こういが発生はっせいする時点じてんや場合ばあい。