English
knaveproof
From knave + -proof.
A compound of knave + -proof
Proto-West Germanic *knappō ‘boy’
Old English cnafa ‘child, boy, youth’
Middle English knave ‘son, male child (offspring)’
English knave
Today it means
adj For a system or body: protected, or designed to be proof against misuse or error; fail-safe.
Language periods are conventional ranges, not dates for this word.
Etymograph / knaveproof