Where does “mightly” come from?

mightly (English) comes from Middle English myghtely, from Old English mihtlīċe, from Old English miht, from Old English mieht, from Old English meaht, from Old English maht, from Germanic *mahti, from Proto-Germanic mahtiz — to be able.

mightly (English): Mighty; competent; capable; strong; powerful;...

Definitions

  1. Mighty; competent; capable; strong; powerful;...

Ancestry of “mightly”, step by step

StepLanguageWordMeaning
1Middle Englishmyghtely
2Old Englishmihtlīċemightily, powerfully, in power; with might
3Old Englishmihtpower, ability; strength, power
4Old Englishmieht
5Old EnglishmeahtAlternative form of miht; second-person singular...
6Old Englishmaht
7Germanic*mahti
8Proto-Germanicmahtizpower, ability; strength, force
9Proto-Germanicmahtuzmight, power
10Proto-Indo-Europeanmógʰtis
11Proto-Indo-Europeanmeǵʰ-to be able
Every word from Proto-Indo-European meǵʰ-Every word from Proto-Indo-European mógʰtisEvery word from Proto-Germanic mahtuz