Where does “mightlessness” come from?

mightlessness (English) comes from English mightless, from Middle English mightles, from Old English mihtlēas, from Old English miht, from Old English mieht, from Old English meaht, from Old English maht, from Germanic *mahti — to be able.

mightlessness (English): Absence of might or power

Definitions

  1. Absence of might or power

Ancestry of “mightlessness”, step by step

mightlessness traces back through two separate lines of ancestry.

via English mightless

StepLanguageWordMeaning
1EnglishmightlessLacking in might or vigour; powerless; weak
2Middle Englishmightles
3Old Englishmihtlēasmightless, weak, powerless, impotent; without might or power
4Old Englishmihtpower, ability; strength, power
5Old Englishmieht
6Old EnglishmeahtAlternative form of miht; second-person singular...
7Old Englishmaht
8Germanic*mahti
9Proto-Germanicmahtizpower, ability; strength, force
10Proto-Germanicmahtuzmight, power
11Proto-Indo-Europeanmógʰtis
12Proto-Indo-Europeanmeǵʰ-to be able

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European meǵʰ-Every word from Proto-Indo-European mógʰtisEvery word from Proto-Germanic mahtuz