Where does “weakliness” come from?

weakliness (English) comes from English weakly, from Old English waclice, from Old English -e, from Old English -en, from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz, from Proto-Indo-European -iHnos — adjectival suffix.

weakliness (English): The quality of being weakly

Definitions

  1. The quality of being weakly

Ancestry of “weakliness”, step by step

weakliness traces back through two separate lines of ancestry.

via English weakly

StepLanguageWordMeaning
1EnglishweaklyFrail, sickly or of a delicate constitution;...
2Old Englishwacliceweakly, feebly
3Old English-eforming adverbs from adjectives; -ly
4Old English-enmæġþ + API → mæġden; cocc + API → cycen, cicen;...
5Old Norse-innUsed to create adjectives from nouns, meaning...
6Proto-Norse-īna-
7Proto-Germanic-īnaz-en
8Proto-Indo-European-iHnosCreates adjectives of materials
9Proto-Indo-European-no-adjectival suffix

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 -no-Every word from Proto-Germanic -īnazEvery word from Old English -en