Firsthand rhymes with:
lefthand, righthand, hand, lefthand, marchand, offhand, righthand, band, banned, bland, bourland, brand, brande, canned, chand, command, deland, demand, disband, expand, fanned, fernand, gland, grand, grande, hand, hoiland, laband, land, lande, lefthand, manned, marchand, meadowland, misunderstand, offhand, outmanned, panned, planned, rand, remand, righthand, sand, sande, scanned, shand, spanned, stand, strand, strande, tanned, understand, unmanned, unplanned, vande, withstand, zand