Where does “unrespirable” come from?

unrespirable (English) comes from English respirable, from English respire, from Middle English respiren, from Old French respirer, from Latin respīrō, from Latin rĕ-, from Latin prōdūcō, from Latin prō- — passed , crossed.

unrespirable (English): Not respirable; unbreathable

Definitions

  1. Not respirable; unbreathable

Ancestry of “unrespirable”, step by step

unrespirable traces back through two separate lines of ancestry.

via English respirable

StepLanguageWordMeaning
1Englishrespirablebreathable; capable of respiration
2EnglishrespireTo breathe in and out; to engage in the process...
3Middle Englishrespiren
4Old Frenchrespirerto respire; to breathe; to come back to life; to...
5Latinrespīrōto blow or breathe back; to breathe out, exhale
6Latinrĕ-back, backwards
7Latinprōdūcōto lead or bring forth, forward or out
8Latinprō-forward direction, forward movement
9Proto-Italic*pro-pro- see the Latin entry for further meanings
10Proto-Indo-Europeanpro-toward, forward
11Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
12Proto-Indo-Europeanper-before, in front; first; to go through
13Proto-Indo-Europeanpr̥tóspassed , crossed

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Latin rĕ-