Where does “undeclining” come from?

undeclining (English) comes from English declining, from English decline, from Old French decliner, from Latin dēclīnō, from Latin dē-, from Latin dē, from Latin post, from Latin poste — afterwards, post; by, at.

undeclining (English): Not declining

Definitions

  1. Not declining

Ancestry of “undeclining”, step by step

undeclining traces back through two separate lines of ancestry.

via English declining

StepLanguageWordMeaning
1EnglishdecliningPresent participle and gerund of decline; decline
2EnglishdeclineDownward movement, fall; A sloping downward, e.g....
3Old Frenchdecliner
4Latindēclīnōto bend, deviate, turn aside/away, deflect
5Latindē-of; from
6Latinof; concerning; about
7Latinpostbehind; after, since, besides, except; behind,...
8Latinposteablative singular of postis
9Proto-Italicpostibehind, after
10Proto-Indo-Europeanpóstiafter
11Proto-Indo-Europeanpósafterwards, post; by, at

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European pós