Where does “tristfulness” come from?

tristfulness (English) comes from English tristful, from Middle English trystefull, from Middle English trist, from Old French triste, from Old Norse treysta, from Proto-Germanic traustijaną, from Proto-Germanic -janą, from Proto-Indo-European -yéti — he, she.

tristfulness (English): sadness; sorrow; melancholy

Definitions

  1. sadness; sorrow; melancholy

Ancestry of “tristfulness”, step by step

tristfulness traces back through two separate lines of ancestry.

via English tristful

StepLanguageWordMeaning
1EnglishtristfulSad, melancholic
2Middle Englishtrystefulltrustworthy, faithful
3Middle Englishtrist—
4Old Frenchtristesad
5Old Norsetreystato make safe, secure
6Proto-Germanictraustijanąto make strong, make reliable; to comfort,...
7Proto-Germanic-janąDerives denominatives from nouns and factitives...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-—
10Chichewaiyehe, she

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 Chichewa iye →Every word from Proto-Germanic -janą →Every word from Proto-Indo-European -yéti →