Arba rhymes with:
barba, barba, borba, chorba, korba, malerba, norba, prosorba, sterba, verba, yorba
Arba sounds like:
airwave, arab, arabe, arabia, arabie, arapaho, arapahoe, arb, arbo, arby, arp, arpa, arrive, arrupe, aruba, arup, arva, arvay, arve, arvey