Where does “stifftail” come from?

stifftail (English) comes from English stiff, from Middle English stif, from Old English stīf, from Proto-West Germanic stīf, from Proto-Germanic stīfaz, from Proto-Indo-European steypós.

stifftail (English): Any of various ducks whose tails have stiff...

Definitions

  1. Any of various ducks whose tails have stiff...

Ancestry of “stifftail”, step by step

stifftail traces back through two separate lines of ancestry.

via English stiff

StepLanguageWordMeaning
1EnglishstiffRigid; hard to bend; inflexible; Inflexible;...
2Middle EnglishstifStiff, firm, hard; difficult to move or...
3Old EnglishstīfStiff, firm, hard
4Proto-West Germanicstīfstiff, rigid
5Proto-Germanicstīfazstiff, rigid
6Proto-Indo-Europeansteypós

via English Tail

StepLanguageWordMeaning
1EnglishTailA Chinese constellation coinciding with the tail of Scorpius, one of the 28 lunar mansions and the tail of Azure Dragon
2Middle EnglishtaylA tail; The back side or reverse of a creature; A...
3Old Englishtæġltail
4Proto-Germanictagląhair; ponytail; hair of a tail; tail
5Proto-Indo-Europeandoḱ-hair of the tail
6Proto-Indo-Europeandeḱ-take; perceive
Every word from Proto-Indo-European steypósEvery word from Proto-Germanic stīfazEvery word from Proto-West Germanic stīf