An open list of 23 words by hap_e_wordnik.
- executrix was added by hap_e_wordnik and appears on 13 other lists
- dominatrix was added by hap_e_wordnik and appears on 15 other lists
- persecutrix was added by madmouth and appears on 1 other list
- obstetrix was added by john and appears on just this list
- rixatrix was added by actung and appears on 28 other lists
- creatrix was added by actung and appears on 2 other lists
- aviatrix was added by actung and appears on 14 other lists
- meretrix was added by actung and appears on 7 other lists
- victrix was added by actung and appears on 1 other list
- prosecutrix was added by actung and appears on just this list
- directrix was added by actung and appears on 4 other lists
- genitrix was added by actung and appears on just this list
- inheritrix was added by actung and appears on just this list
- progenitrix was added by actung and appears on 1 other list
- coadjutrix was added by actung and appears on just this list
- rectrix was added by actung and appears on 8 other lists
- tutrix was added by actung and appears on 1 other list
- motrix was added by actung and appears on 2 other lists
- moderatrix was added by actung and appears on just this list
- proprietrix was added by actung and appears on just this list
- indagatrix was added by actung and appears on 5 other lists
- heritrix was added by actung and appears on 1 other list
- operatrix was added by actung and appears on just this list

john There's also this more complete -trix list. Sep 20, 2010