Used to express that an action or a state is excessive, meaning 'too much' or 'overly'. It suggests going beyond an appropriate limit. Connect it to the masu-stem of verbs, the stem of i-adjectives, or the stem of na-adjectives. For example, 「食べすぎるのは良くない」 (Eating too much is not good).

何かをやりすぎたり、状態が行き過ぎることを表します。動詞や形容詞に接続します。