1Making a lot of noise; loud enough to be disruptive or unpleasant.
近所の工事が朝からうるさい。
The construction next door has been noisy since morning.
テレビの音がうるさいから少し下げてくれる？
The TV is loud — could you turn it down a bit?
夜中の車の音がうるさくて眠れない。
I can't sleep because the cars at night are so noisy.
2Annoying or troublesome; persistent in a bothersome way (e.g., repeated solicitations or nagging behavior).
勧誘の電話が毎日のようにかかってきてうるさい。
Telemarketing calls come almost every day — it's annoying.
近所の人がしつこく訪ねてきてうるさく感じる。
The neighbor keeps coming by persistently, which is bothersome.
会議中に何度も同じ質問をされると本当にうるさい。
Being asked the same question repeatedly during a meeting is really annoying.
3Fussy or picky (about tastes, standards, or small details); particular or fastidious.
彼は食べ物にうるさくて、外食では注文に気を使う。
He's picky about food, so I have to be careful when ordering when we eat out.
うちの上司は服装にうるさく、スーツでないと注意される。
My boss is particular about clothing and will scold you if you're not wearing a suit.
4As an interjection: "Shut up!" or "Be quiet!", used colloquially with a strong, blunt force.
うるさい！今集中して勉強しているんだから。
Shut up! I'm concentrating on studying right now.
うるさい、うるさい！もう黙ってくれよ。
Enough, enough! Just be quiet already.