Where does “spontaneously” come from?

Spontaneously comes from English spontaneous, from Latin spontaneus, from Latin sponte combined with the adjectival suffix Latin -anus, ultimately deriving from Proto-Indo-European roots ḱóm and līg-.

spontaneously (English): In a spontaneous manner; naturally; voluntarily

Definitions

  1. In a spontaneous manner; naturally; voluntarily

Ancestry of “spontaneously”, 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