後始末が大変だよ。

後始末が大変だよ。

Afterwards there will be hell to pay.

後始末(あとしまつ)が大変(たいへん)だよ。

Atoshimatsu ga taihen da yo.

後始末 (あとしまつ)

settlement (of affairs); remedial measures; cleaning up afterwards

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

大変 (たいへん)

very; greatly; immense; enormous; great; serious; grave; dreadful; terrible; difficult; hard; major incident; disaster

だ (だ)

be; is; indicates past or completed action; indicates light imperative

よ (よ)

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!

Readings: ゴ、コウ、のち、うし.ろ、うしろ、あと、おく.れる

Meanings: behind, back, later

Readings: シ、はじ.める、 -はじ.める、はじ.まる

Meanings: commence, begin

Readings: マツ、バツ、すえ

Meanings: end, close, tip, powder, posterity

Readings: ダイ、タイ、おお-、おお.きい、 -おお.いに

Meanings: large, big

Readings: ヘン、か.わる、か.わり、か.える

Meanings: unusual, change, strange