Entry 1 sense Webster, 1913 Whosoever /(ho͞o`sō̇*ĕv"ẽr)/ · Who·so·ev·er · IPA /huːsoʊˈɛvɚ/ 01 pron. Whatsoever person; any person whatever that; whoever. 1. Whatsoever person; any person whatever that; whoever. “Whosoever will, let him take . . . freely.” — Rev. xxii. 17.