to be tired and weak
疲労する.
to become weary of something
weak from exhaustion
be (all) tuckered out
疲れきった
疲れているんだ。
I am tired out―done up―exhausted.
疲れたなあ。
I'm done up.
to collapse with exhaustion
I am dead tired―dog-tired―completely done up―ready to drop―reduced to pulp.
疲れたよ。