Where does “sicker” come from?

Sicker derives from Middle English siker, from Old English sicor, from Proto-Germanic sikrōną, from Latin securus meaning "free from care," itself composed of se- (on one's own) from suus and cura (care), ultimately from Proto-Indo-European roots kʷey- and swoyos.

sicker (English): comparative form of sick: more sick; Certain;...

Definitions

  1. comparative form of sick: more sick; Certain;...

Ancestry of “sicker”, step by step

StepLanguageWordMeaning
1Middle Englishsikersafe, secure not harmful or dangerous
2Old Englishsicorsecure, free from guilt or punishment, safe, free...
3Proto-West Germanicsikursecure, safe; sure, certain
4Latinsēcūruscareless, negligent
5Latinsē-apart-; aside-; away
6Latinsexsix; 6
7Proto-Italicsekssix
8Proto-Indo-Europeanswéḱssix

Words derived from “sicker

Every word from Proto-Indo-European swéḱsEvery word from Latin sē-Every word from Proto-Italic seks
sicker — Etymology, Origin & Word History | Etymology Explorer