Where does “riotproof” come from?

riotproof (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.

riotproof (English): Resistant to rioting

Definitions

  1. Resistant to rioting

Ancestry of “riotproof”, step by step

riotproof 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 riot

StepLanguageWordMeaning
1EnglishriotWanton or unrestrained behavior; uproar; tumult;...
2Middle Englishriotdebauched living, dissipation
3Old Frenchriotequarrel; debate
4Latinrugiōto roar, bellow; rumble
5Proto-Indo-Europeanh₁rewg-to belch; to roar
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European por-