Where does “afterthought” come from?

Afterthought is a compound of English after and English thought, from Old English æfter and Old English þōht, ultimately tracing to Proto-Indo-European apotero and teng-.

afterthought (English): A reflection after an act; a later or subsequent...

Definitions

  1. A reflection after an act; a later or subsequent...

Ancestry of “afterthought”, step by step

StepLanguageWordMeaning
1Englishafter-With contrary, subordinate, or remote effect;...
2Old Englishæfter-after, behind; afterward; for, for the sake or...
3Old Englishæfterafter; according to
4Proto-West Germanic*aftarafter, behind
5Proto-Germanicafterafter, behind
6Proto-Indo-Europeanh₂epoterosfurther behind, further away
Every word from Proto-Indo-European h₂epoterosEvery word from Proto-Germanic afterEvery word from Proto-West Germanic *aftar