whosever /ˈhuzˌɛvəɹ/contraction 1determiner 1pronoun 1 contraction1 •(nonstandard) whoever is.This would make J. Dumars come off the bench and sometimes give us a nice 3 guard line-up sometimes with Hunter at SG, Dumars at SF, and whosever in between the pg's from GS. — 1997 determiner1 •(formal) Of whomever; belonging or related to whichever person or persons; whoever's.Whosever sunglasses these are will have to pick them up tomorrow. pronoun1 •(formal) That of whomever; that which belongs or is related to whatever person or persons; whoever's.At first she had been only relieved to find that the voice, whosever it was, trickling over the wire, was not his. — 1930
