Where does “formidable” come from?

formidable (Middle French) comes from Latin formidabilis, from Latin formido, from Proto-Indo-European dʰer- — to support; to hold.

Ancestry of “formidable”, step by step

StepLanguageWordMeaning
1LatinformidabilisCausing or inspiring fear, terrible, frightening,...
2LatinformidoI dread or fear; I am afraid of or for; fear,...
3Proto-Indo-Europeandʰer-to support; to hold

Words derived from “formidable

Every word from Proto-Indo-European dʰer-Every word from Latin formidoEvery word from Latin formidabilis
formidable — Etymology, Origin & Word History | Etymology Explorer