Where does “unhackable” come from?

unhackable (English) comes from English hackable, from English hack, from English hackysack, from English hackeysack, from English sack, from Middle English sak, from Old English sacc, from Old English sæcc — sack; sackcloth; sackcloth vestment, penitential...

unhackable (English): Not hackable; that cannot be hacked or broken...

Definitions

  1. Not hackable; that cannot be hacked or broken...

Ancestry of “unhackable”, step by step

unhackable traces back through two separate lines of ancestry.

via English hackable

StepLanguageWordMeaning
1EnglishhackableThat can be hacked or broken into; insecure,...
2EnglishhackTo chop or cut down in a rough manner; To cough...
3EnglishhackysackAlternative form of hackeysack
4EnglishhackeysackA non-competition sport in which a small sack, or...
5EnglishsackA bag; especially a large bag of strong, coarse...
6Middle Englishsakbag, sackcloth
7Old Englishsaccsack, bag
8Old Englishsæccbattle, strife, fighting
9Proto-West Germanicsakkusack, bag
10Proto-Germanicsakkuzsack, bag, purse
11Latinsaccussack, bag; purse, wallet, moneybag; garment of...
12Ancient Greekσάκκοςsack; sackcloth; sackcloth vestment, penitential...

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Ancient Greek σάκκος