はもううんざりだ

I'm fed up with

→ は
phrase Rare #36,618
I'm fed up with Used to say that you are tired of or annoyed by something. The topic before は is what you are fed up with; もう emphasizes that you have had enough.
JA: 毎日の残業はもううんざりだ。
EN: I'm fed up with working overtime every day.

スイカはもううんざりだ

I'm sick of watermelon.

はもううんざりだ

I'm sick and tired of beans.

尻拭いはもううんざりだ

I'm sick and tired of cleaning up everyone else's messes.

トムはもううんざりだ

I'm fed up with Tom.