Where does “simultaneously” come from?

Simultaneously derives from Middle English -ly added to Latin simultim, from Latin simul meaning "at the same time," itself from Latin similis, tracing back through Proto-Indo-European līg-, ḱóm, and sem-.

simultaneously (English): Occurring at the same time

Definitions

  1. Occurring at the same time

Ancestry of “simultaneously”, 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 *-līk