Where does “fat-tailed” come from?

fat-tailed (English) comes from English fat, from French fat, from Old Occitan fat, from Latin fatuus, from Latin fātus, from Latin for, from Proto-Italic fāōr, from Proto-Indo-European bʰéh₂ti — to speak, to be talking.

fat-tailed (English): Having a fat tail; leptokurtic

Definitions

  1. Having a fat tail; leptokurtic

Ancestry of “fat-tailed”, step by step

fat-tailed traces back through two separate lines of ancestry.

via English fat

StepLanguageWordMeaning
1EnglishfatCarrying more fat than usual on one's body;...
2Frenchfatconceited
3Old Occitanfat
4Latinfatuusfoolish, silly, simple; stupid; insipid,...
5Latinfātusspoken, said, told, foretold, related, predicted; having or had spoken, etc
6Latinfor"defective"; I speak, talk, say
7Proto-Italicfāōrspeak
8Proto-Indo-Europeanbʰéh₂tito speak, to be talking

via English tailed

StepLanguageWordMeaning
1Englishtailedsimple past tense and past participle of tail;...
2Middle Englishtayledtailed; Having a part which drags on the floor
3Middle EnglishtaylA tail; The back side or reverse of a creature; A...
4Old Englishtæġltail
5Proto-Germanictagląhair; ponytail; hair of a tail; tail
6Proto-Indo-Europeandoḱ-hair of the tail
7Proto-Indo-Europeandeḱ-take; perceive
Every word from Proto-Indo-European bʰéh₂ti