Where does “off chance” come from?

off chance (English) comes from English chance, from Middle English chance, from Old French cheance, from Vulgar Latin cadentia, from Latin cadēns, from Latin cadō, from Proto-Italic kadō, from Proto-Indo-European ḱad- — to fall.

off chance (English): A possibility that is not likely or probable

Definitions

  1. A possibility that is not likely or probable

Ancestry of “off chance”, step by step

off chance traces back through two separate lines of ancestry.

via English chance

StepLanguageWordMeaning
1EnglishchanceAn opportunity or possibility; Random occurrence;...
2Middle Englishchance
3Old Frenchcheanceaccident, chance, luck
4Vulgar Latincadentiafalling
5Latincadēnsfalling
6Latincadōto fall, to fall out
7Proto-Italickadōfall, sink
8Proto-Indo-Europeanḱad-to fall

via English off

StepLanguageWordMeaning
1EnglishoffIn a direction away from the speaker or object;...
2Middle Englishofof; off; until
3Old Englishofof, from, off, out of
4Old Englishæfof
5Proto-Germanic*ab
6Proto-Indo-Europeanapó
Every word from Proto-Indo-European ḱad-
off chance — Etymology, Origin & Word History | Etymology Explorer