Where does “unmailable” come from?

unmailable (English) comes from English mailable, from English able, from Middle English able, from Old French able, from Latin habilis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis — Forms agent nouns from verbal roots.

unmailable (English): That cannot be mailed, or sent by post

Definitions

  1. That cannot be mailed, or sent by post

Ancestry of “unmailable”, step by step

unmailable traces back through two separate lines of ancestry.

via English mailable

StepLanguageWordMeaning
1EnglishmailableThat can be sent by mail
2EnglishableEasy to use; Suitable; competent; Liable to
3Middle Englishablecapable, expert, qualified, skilful, competent
4Old Frenchableable; capable
5Latinhabilisable to have/possess/maintain; having sufficient...
6Latin-ilis-ile
7Proto-Italic-elis
8Proto-Indo-European-elis
9Proto-Indo-European-lósForms agent nouns from verbal roots

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European -lós
unmailable — Etymology, Origin & Word History | Etymology Explorer