Where does “unthriving” come from?

unthriving (English) comes from English thriving, from English thrive, from Middle English turf, from Old English turf, from Proto-West Germanic turb, from Proto-Germanic turbz, from Proto-Indo-European dorbh- — tuft, grass.

unthriving (English): Failing to thrive; weak or sickly

Definitions

  1. Failing to thrive; weak or sickly

Ancestry of “unthriving”, step by step

unthriving traces back through two separate lines of ancestry.

via English thriving

StepLanguageWordMeaning
1EnglishthrivingThat thrives; successful; flourishing or...
2EnglishthriveTo grow or increase stature; to grow vigorously...
3Middle Englishturfsoil, earth
4Old Englishturfturf
5Proto-West Germanicturbturf, peat
6Proto-Germanicturbzturf, peat
7Proto-Indo-Europeandorbh-tuft, grass

via English un

StepLanguageWordMeaning
1EnglishunOne

Words derived from “unthriving

Every word from Proto-Indo-European dorbh-Every word from Proto-Germanic turbzEvery word from Proto-West Germanic turb