Synonyms for but

Indicating contrast

however, on the other hand, in contrast, nevertheless, still, yet, though, on the contrary, but then, but as you see; see also although.

Indicating an exception

except, save, disregarding, without, not including, not taking into account, let alone, leaving out of consideration, aside from, with the exception of, not to mention, passing over, barring, setting aside, forgetting, omitting (to mention); see also except.

Indicating a limitation

only, only just, merely, simply, barely, solely, purely, just, no more, exactly, no other than, without.