What it means
逆に is an adverb meaning “conversely” or “on the contrary.” It introduces a statement that presents a contrasting situation, result, or perspective in relation to what came before. It commonly appears at the beginning of a sentence or clause, especially in comparisons and explanations.
Usage note
逆に usually refers back to an earlier statement or an understood expectation, so the contrast should be clear from context. It is not limited to a complete logical opposite; it can also introduce a situation that differs in direction or tendency.
Example sentences
この薬は眠気が出る人が多いが、逆に頭がさえて眠れなくなる人もいる。
Many people become drowsy from this medicine, but conversely, some people become so alert that they cannot sleep.
窓を閉めると部屋は静かになるが、逆に空気がこもって息苦しく