もうたくさんだ

I've had enough

→ もう
phrase Rare #23,636
I've had enough An emphatic expression of annoyance or exasperation meaning that something has become intolerable or should stop. It can sound blunt or confrontational.
JA: そのくだらない言い訳はもうたくさんだ。
EN: I've had enough of those stupid excuses.

この悪い天気はもうたくさんだ

I've had enough of this bad weather.

くだらない話はもうたくさんだ

I've had enough of this nonsense.

あなたの自慢話もうたくさんだ

I've had enough of your bragging.

でももうたくさんだ

But I've had enough already.

— サイコ (1960)

こんなくだらないことに時間を費やすのはもうたくさんだ

I've had enough of wasting time on such pointless nonsense.

— 善き人のためのソナタ (2006)

その話はもうたくさんだ

I've had enough of that talk.

俺はもうたくさんだ

I've had enough.

— ザ・マン・フロム・アース (2007)

腐った肉はもうたくさんだ

I've had enough of this rotten meat.

— 戦艦ポチョムキン (1925)

君の馬鹿げたゴシップもうたくさんだ

I've had enough of your ridiculous gossip.

phrase Rare #24,134
I've had enough Expresses strong annoyance or refusal, often meaning that something unpleasant must stop. だろ can be added for emphasis or to seek agreement.
JA: こんなひどい言い訳はもうたくさんだ。
EN: I've had enough of these terrible excuses.

もうたくさんだ君にはウンザリ

I've had enough. I'm sick of you!

— オープン・ユア・アイズ (1997)

これ以上恐ろしい話はもうたくさんだ

I've had more than enough of these terrifying stories.

— 羅生門 (1950)

もうたくさんだ

I've had enough.

— ファイト・クラブ (1999)

俺をホモ呼ばわりもうたくさんだ

I'm sick of being called gay.

— グッドフェローズ (1990)

もうたくさんだ

I've had enough.

もうたくさんだ

I've had enough!

— レザボア・ドッグス (1992)