大掃除

thorough cleaning, deep clean

大 large; great; very (as an intensifier) + 掃除 cleaning, cleaning up
noun Rare #28,649
thorough cleaning, deep clean Often refers to a major seasonal or year-end cleaning.
JA: 週末に家の大掃除をします。
EN: I’m doing a thorough cleaning of the house this weekend.

大掃除をした別の飛行機の着陸に備えて早めに店に行った

I did a thorough cleaning and went to the store early to prepare for another plane’s landing.

— 恋する惑星 (1994)

大掃除、手伝って。

Help me with the deep cleaning.

大掃除の時間よ。

It’s time for the big cleanup.

台所の大掃除しなくちゃね。

We need to do a thorough cleaning of the kitchen.

あぁ確か大掃除の時に…ああっぼっちゃんケガはありませんか?

Oh, right, during the big cleanup… Oh! Young master, are you hurt?

— Arrietty (2010)

大掃除の時間だよ!

It’s time for a big cleanup!