chambered (adj.)youdaoicibaDictYouDict
late 14c., past participle adjective from chamber (v.).
unencumbered (adj.)youdaoicibaDictYouDict
1722, from un- (1) "not" + past participle of encumber (v.).
unnumbered (adj.)youdaoicibaDictYouDict
late 14c., from un- (1) "not" + past participle of number (v.).