Where does “unpromisable” come from?

unpromisable (English) comes from English promisable, from English promise, from Middle English promis, from Old French promesse, from Medieval Latin promissa, from Latin prōmissum, from Latin promissus, from Latin prōmittō — to fit, to fix, to put together.

unpromisable (English): That cannot be promised

Definitions

  1. That cannot be promised

Ancestry of “unpromisable”, step by step

unpromisable traces back through two separate lines of ancestry.

via English promisable

StepLanguageWordMeaning
1EnglishpromisableAble to be promised
2Englishpromisean oath or affirmation; a vow; a transaction...
3Middle Englishpromis
4Old Frenchpromessepromise
5Medieval Latinpromissa
6Latinprōmissumpromise
7Latinpromissuspromised
8Latinprōmittōto send forth
9Latinprōfor
10Latinratusconsidered, having been considered; established,...
11Latinrēōrto reckon, calculate
12Proto-Italicrēōrto reckon, to calculate; to think, to deem, to...
13Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
14Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European h₂er-Every word from Proto-Indo-European h₂reh₁-Every word from Proto-Italic rēōr