A Obnoxious basically means 'extremely unpleasant' and 'annoying' You can replace annoying with obnoxious if you want to make the meaning stronger The cat was/is obnoxious The microwave made an obnoxious beeping sound after the timerObnoxious意味・例文／obnoxious behavior：（とても）不快な振る舞い 英文和訳 問題⇒ His obnoxious behavior during the wedding reception was a great embarrassment to his wife．Offensive or odious "I know no method to secure the repeal of bad or obnoxious laws so effective as their stringent execution" (
語源でイメージ Noc Nox の英単語まとめ Noxious 死ぬほどわかる英文法ブログ
