n. 25B6; conjunction
he stumbled but didn't fall : YET, nevertheless, nonetheless, even so, however, still, notwithstanding, despite that, in spite of that, for all that, all the same, just the same; though, although.
I am clean but you aren't : WHEREAS, conversely, but then, then again, on the other hand, by/in contrast, on the contrary.
one cannot but sympathize : (DO) OTHER THAN, (do) otherwise than; except.
25B6; preposition everyone but him : EXCEPT (FOR), apart from, other than, besides, aside from, with the exception of, bar, excepting, excluding, leaving out, save (for), saving.
25B6; adverb he is but a shadow of his former self : ONLY, just, simply, merely, no more than, nothing but; a mere; N. English nobbut.
25A0; but for EXCEPT FOR, if it were not for, were it not for, barring, notwithstanding.