• (a.) Of what sort or kind; what; what a; who.
  • (a.) A interrogative pronoun, used both substantively and adjectively, and in direct and indirect questions, to ask for, or refer to, an individual person or thing among several of a class; as, which man is it? which woman was it? which is the house? he asked which route he should take; which is best, to live or to die? See the Note under What, pron., 1.
  • (pron.) A relative pronoun, used esp. in referring to an antecedent noun or clause, but sometimes with reference to what is specified or implied in a sentence, or to a following noun or clause (generally involving a reference, however, to something which has preceded). It is used in all numbers and genders, and was formerly used of persons.
  • (pron.) A compound relative or indefinite pronoun, standing for any one which, whichever, that which, those which, the . . . which, and the like; as, take which you will.

Compare which with other words:

including vs. which

one vs. which

any vs. which

this vs. which

chich vs. which

which vs. wizard

such vs. which

wherethrough vs. which

unattackable vs. which

attackable vs. which

which vs. wish

how vs. which

they vs. which

where vs. which

thar vs. which

which vs. with

whereby vs. which

whereinto vs. which

whereon vs. which

also vs. which

coulisse vs. which

soever vs. which

whereupon vs. which

whereof vs. which

which vs. witch

which vs. whom

wherefore vs. which

which vs. whichsoever

which vs. whichever

which vs. who

interrogative vs. which

which vs. wich

which vs. whose

what vs. which

that vs. which