Where does “trimonthly” come from?

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

trimonthly (English): Occurring at intervals three months apart; A...

Definitions

  1. Occurring at intervals three months apart; A...

Ancestry of “trimonthly”, step by step

StepLanguageWordMeaning
1EnglishmonthlyOccurring every month; Every month; A publication...
2English-lyUsed to form adjectives from nouns, the...
3EnglishgrislyHorrifyingly repellent; gruesome, terrifying;...
4Middle Englishgrisely
5Old Englishgrisliċgrisly, horrible; dreadful, horrid
6Old English-līċsuffix forming {{glossary|adjective}}s meaning...
7Proto-Germanic*-līk
Every word from Proto-Germanic *-līk