Where does “undeserve” come from?

undeserve (English) comes from English deserve, from Middle English deserven, from Old French deservir, from Latin dēserviō, from Latin dē-, from Latin dē, from Latin post, from Latin poste — afterwards, post; by, at.

undeserve (English): To fail to deserve

Definitions

  1. To fail to deserve

Ancestry of “undeserve”, step by step

undeserve traces back through two separate lines of ancestry.

via English deserve

StepLanguageWordMeaning
1EnglishdeserveTo be entitled to, as a result of past actions;...
2Middle Englishdeserven
3Old Frenchdeservirto serve well or zealously; to deserve; to merit
4Latindēserviōto serve zealously
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 pósEvery word from Latin dē-Every word from Proto-Indo-European pósti