Where does “slatiness” come from?

slatiness (English) comes from English slaty, from English slate, from English sclate, from Old French esclate, from Old French esclater, from Frankish slaitan, from Proto-Germanic slaitijaną, from Proto-Germanic slītaną.

slatiness (English): The state or quality of being slaty

Definitions

  1. The state or quality of being slaty

Ancestry of “slatiness”, step by step

slatiness traces back through two separate lines of ancestry.

via English slaty

StepLanguageWordMeaning
1EnglishslatyResembling the mineral slate
2EnglishslateA fine-grained homogeneous sedimentary rock...
3EnglishsclateObsolete form of slate
4Old Frenchesclate
5Old Frenchesclaterto separate from, sunder out
6Frankishslaitanto split, break
7Proto-Germanicslaitijaną
8Proto-Germanicslītanąto tear apart
9Proto-Indo-Europeansleyd-

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 sleyd-Every word from Proto-Germanic slītanąEvery word from Proto-Germanic slaitijaną