Definiciones
1.VerbTo exclude; to specify as being an exception."I find most people annoying — present company excepted, of course!"
2.VerbTo take exception, to object (to or against)."to except to a witness or his testimony"
3.PrepositionUsed to introduce an exception or qualification to something previously stated."There was nothing in the cupboard except a tin of beans."
4.ConjunctionUsed to introduce a clause, phrase, verb infinitive, adverb or other non-noun complement forming an exception or qualification to something previously stated."You look a bit like my sister, except (that) she has longer hair.; I never made fun of her except teasingly.; To survive, I did everything except steal.; Come any time except between ten and twelve."
5.ConjunctionLoosely, used to introduce a contrastive statement explaining why something wasn't successful, didn't happen, etc."They fired tear gas at us, except the wind was blowing the wrong way.; I almost walked out, except I remembered the promise I had made."
6.ConjunctionUnless; used to introduce a hypothetical case in which an exception may exist.