Avian rhymes with:
moldavian, moravian, scandinavian, bolivian, evian, jovian, latvian, levien, moldavian, moravian, nervion, oblivion, pavlovian, peruvian, scandinavian, vivian, vivien, vivienne, yugoslavian
Avian sounds like:
abiam, abney, affine, apennine, apnea, appian, aubin, avana, aven, avena, aveni, avenue, aviano, avina, avon