Colby rhymes with:
bowlby, dolby, albie, appleby, bailby, balbi, bielby, bilby, bowlby, dalbey, dalby, dolby, filby, gilbey, gilby, huckelby, kelby, kilby, melby, milby, nickleby, philby, selby, shelby, trilby, walby, welby
Colby sounds like:
calaf, caleb, calef, calf, calfee, calif, califf, caliph, calliope, calvey, calvi, calvo, celeb, chalabi, chalupa, chelf, cilluffo, cilva, clabo, claffey, clap, clapp, cleave, clef, cleva, cleve, clevie, clif, cliff, cliffe, clip, clive, club, clubb, clubby, cluff, clyve, colab, collopy, colopy, cowslip, cullop, culp, culpa