Webster’s Revised Unabridged Dictionary · 1913
Disprove
Dis·prove′ (dĭs·pro͞ov′), v. t. [imp. & p. p. Disproved; p. pr. & vb. n. Disproving.] [Pref. dis- + prove: cf. OF. desprover.] 1. To prove to be false or erroneous; to confute; to refute.
That false supposition I advanced in order to disprove it. Atterbury.
2. To disallow; to disapprove of. [Obs.] Stirling.