conversely

This term is primarily used in formal, academic, or technical writing to signal a logical reversal. It functions as a conjunctive adverb, typically introducing a second statement that presents an opposite perspective or a mirrored result to the first. It is more precise than "on the other hand" because it specifically implies a reciprocal or inverse relationship rather than just a different point of view.

Because of its high register, using this word in casual conversation can sound overly stiff or pedantic. In spoken English, speakers typically prefer "then again" or "but then" to achieve a similar effect. It is most effective when the two statements being compared are logically linked as opposites.