1
Stage 1 of 3
probare
Latin · ancient
"to test, to prove"
to test, to prove, combined with dis- (not)
2
Stage 2 of 3
desprover
Old French · medieval
"to show something to be false"
carried into French for showing something to be false, from dis- and prover
3
Stage 3 of 3
disprove
English · 1300s
"to show that something is false or wrong"
settled as the English word for showing that something is false
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