Where does “underailable” come from?

underailable (English) comes from English derailable, from English derail, from French dérailler, from French dé-, from Middle French dés-, from Latin dē-, from Latin dē, from Latin post — afterwards, post; by, at.

underailable (English): That cannot derail, or be derailed

Definitions

  1. That cannot derail, or be derailed

Ancestry of “underailable”, step by step

underailable traces back through two separate lines of ancestry.

via English derailable

StepLanguageWordMeaning
1EnglishderailableCapable of being derailed
2EnglishderailA device placed on railway tracks causing a train...
3Frenchdéraillerto derail, be derailed; to be off one's rocker
4Frenchdé-used to make antonyms
5Middle Frenchdés-de-; dis
6Latindē-of; from
7Latinof; concerning; about
8Latinpostbehind; after, since, besides, except; behind,...
9Latinposteablative singular of postis
10Proto-Italicpostibehind, after
11Proto-Indo-Europeanpóstiafter
12Proto-Indo-Europeanpósafterwards, post; by, at

via English un

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