Arp rhymes with:
carp, garp, harp, harpe, karp, scarp, scharp, sharp, sharpe, tarp, tharp, tharpe
Arp sounds like:
airwave, arab, arabe, arabia, arabie, arapaho, arapahoe, arb, arba, arbo, arby, arpa, arrive, arrupe, aruba, arup, arva, arvay, arve, arvey