contested (adj.)youdaoicibaDictYouDict
1670s, past participle adjective from contest (v.). Of elections, from 1771, American English.
unattested (adj.)youdaoicibaDictYouDict
1660s, from un- (1) "not" + past participle of attest (v.).
uncontested (adj.)youdaoicibaDictYouDict
1670s, from un- (1) "not" + contested.