DISPROVEN
Verb
disproven
Alternative irregular form of the past participle of disprove
Adjective
disproven (not comparable)
Shown to be false
(archaic, Scottish law) Not proven, in a legal case where the jury verdict has inconclusive evidence for conviction, but sufficient to suspect guilt
Source: Wiktionary
DISPROVE
Dis*prove", v. t. [imp. & p. p. Disproved; p. pr. & vb. n.
Disproving.] Etym: [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.
Source: Webster’s Unabridged Dictionary 1913 Edition