Where does “fourthly” come from?

Fourthly comes from Middle English -ly added to Old English -līċ, from Proto-Germanic -līkaz and fedurþô, ultimately from Proto-Indo-European kʷetwṓr meaning "four."

fourthly (English): In the fourth place; fourth in a row

Definitions

  1. In the fourth place; fourth in a row

Ancestry of “fourthly”, 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