'slipproof' originates from English, specifically the compound of 'slip' and 'proof', where 'slip' meant 'to slide unintentionally' and 'proof' (from Old French 'preuve', ultimately from Latin 'probare') came to be used in compounds to mean 'resistant to'.

'slip' comes from Old English 'slipan' meaning 'to glide or slide', and 'proof' comes via Middle English from Old French 'preuve' (from Latin 'probare'); the combination into the modern compound 'slipproof' is a relatively recent productive formation in modern English.

Initially, 'proof' meant 'to test' or 'evidence' but later developed a secondary sense as a suffix meaning 'resistant to' (as in 'bulletproof'), so 'slipproof' evolved to mean 'resistant to slipping'.