Where does “certifiably” come from?

certifiably (English) comes from English -ly, from English grisly, from Middle English grisely, from Old English grisliċ, from Old English -līċ, from Proto-Germanic *-līk.

certifiably (English): With the potential for certification; Genuinely;...

Definitions

  1. With the potential for certification; Genuinely;...

Ancestry of “certifiably”, step by step

StepLanguageWordMeaning
1English-lyUsed to form adjectives from nouns, the...
2EnglishgrislyHorrifyingly repellent; gruesome, terrifying;...
3Middle Englishgrisely
4Old Englishgrisliċgrisly, horrible; dreadful, horrid
5Old English-līċsuffix forming {{glossary|adjective}}s meaning...
6Proto-Germanic*-līk
Every word from Proto-Germanic *-līkEvery word from English -lyEvery word from Old English -līċ
certifiably — Etymology, Origin & Word History | Etymology Explorer