What is the Latin word for whatever, whatsoever?

The usual Latin words for “whatever, whatsoever” are quīcumque, quisquis, sum. The right choice depends on the sense; see the distinctions below.

English → Latin

“whatever, whatsoever” in Latin

quīcumquewhoever, whosoever; whatever, whatsoever quisquiswhoever, whatever sumto be, exist; there be; to go

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

whatever, whatsoever

quicumque: quisquis (the first adjeciively; the second substantively [but quisquis honos, etc., Verg.]; in the oblique cases this is not observed). By whatever means I can, quacumque ratione; quoquo modo. OBS. (1) Whatever it may be, is quidquid est or erit (not subjunctively). (2) Cuicuimodi is found for cujuscujusmodi = of what kind soever (Vid: Zumpt, ad Cic., Verr., 4, 41). (3) Quicumque is used if among a number of subjects of the same species or kind none is excepted or excluded: quisquis, whenever among such a number none of the parts is different or considered as such from the rest; e.g., whatever [= anything, all] we see with our eyes, omnia quae oculis cernimus.

Quick answer

What is the Latin word for whatever, whatsoever?: The usual Latin words for “whatever, whatsoever” are quīcumque, quisquis, sum. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.