Where does “dummy-proof” come from?

dummy-proof (English) comes from English proof, from Middle English proof, from Old French prove, from Latin proba, from Latin probāre, from Latin probō, from Latin Probus, from Proto-Indo-European pro-bhwo- — passed , crossed.

dummy-proof (English): Incapable of being misused even by the stupidest or most careless of users

Definitions

  1. Incapable of being misused even by the stupidest or most careless of users

Ancestry of “dummy-proof”, step by step

dummy-proof traces back through two separate lines of ancestry.

via English proof

StepLanguageWordMeaning
1EnglishproofAn effort, process, or operation designed to...
2Middle Englishproof
3Old Frenchprove
4Latinprobatest, trial; proof, evidence
5Latinprobāre
6Latinprobōto approve, permit, commend
7LatinProbusgood, serviceable, excellent, superior, able
8Proto-Indo-Europeanpro-bhwo-being in front, prominent
9Proto-Indo-Europeanpro-toward, forward
10Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
11Proto-Indo-Europeanper-before, in front; first; to go through
12Proto-Indo-Europeanpr̥tóspassed , crossed

via English dummy

StepLanguageWordMeaning
1EnglishdummyA silent person; a person who does not talk; An...
2EnglishdumbUnable to speak; lacking power of speech; Silent;...
3EnglishdamnTo condemn to hell; To condemn; to declare...
4Middle Englishdampnento damn
5Old Frenchdampnerto damn
6Latindamnōto discredit, find fault, disapprove, reject
7Latindamnumdamage or injury; loss; a fine
8Proto-Italicdapnom
9Proto-Indo-Europeandh₂pnómexpense, investment
10Proto-Indo-Europeandeh₂p-to sacrifice; to lose
11Proto-Indo-Europeandeh₂-to share, divide
Every word from Proto-Indo-European pr̥tós