Antonyms for the phrase "keeps within limits" refer to behaviors or conditions that involve crossing boundaries or exceeding limits. Antonyms may include breaking rules, disobeying regulations, acting recklessly, or being extravagant. Words such as disobey, exceed, violate, break, go overboard, overstep, cross, and transgress can describe actions that go against keeping within limits. Being careless, immoderate, thoughtless, or excessive are additional characteristics of behavior that doesn't keep within limits. In essence, antonyms for "keeps within limits" suggest actions or attitudes that go beyond acceptable boundaries, leading to negative consequences or outcomes.