締め切り・締切・締切り|しめきりshimekiri[0]heiban (flat)

1. noundeadline; closing; cut-offalso written as 〆切(り)
   レポートの締め切しめきりが間近まじかに迫せまっているので、私はひどく忙いそがしい。↗

   I am terribly busy because the report deadline is near.
2. nounclosing (a door, window, etc.)also written as 閉め切り
3. nouncofferdam

• Synonym締め切り日しめきりびNeutralPoints to the specific date of a deadline, stressing which day it falls on; 「締め切り」 can also refer to the time of day or to the closing itself.
• Synonym期限きげんNeutralA period of time or time limit, as in 「賞味期限」「提出期限」; 「締め切り」 centers on the moment applications stop being accepted.
• SynonymデッドラインNeutralA loanword for a final deadline with a pressing, urgent feel; used in both casual speech and business settings.
• Related期日きじつWrittenA date fixed in advance, as in 「支払期日」; written/formal prose. 「締め切り」 centers on the cutoff for applications or submissions.
• Antonym開始かいしNeutralMeans starting or beginning something; the opposite of 「締め切り」, which marks a cutoff.

Use 「締め切り」 for application and submission deadlines; 「締め切り日」 for the deadline date; 「期限」 for a time limit for doing something; 「期日」 for a set date; 「デッドライン」 also works for a final deadline.

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

1. 戸とや窓まどなどを閉しめたままにすること。
2. 期限きげんなどにより取り扱とりあつかいを打ち切うちきること。