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