Undercarriage rhymes with:
aldridge, arrearage, bainbridge, baldridge, baldrige, berridge, burbridge, burridge, cambridge, carriage, claridge, clarridge, coleridge, corbridge, dandridge, daughtridge, delbridge, disparage, doddridge, forage, guthridge, herridge, holdridge, intermarriage, kerridge, kittredge, langridge, lochridge, loughridge, marriage, mcfatridge, mcfetridge, overleverage, prestridge, remarriage, selfridge, shortridge, standridge, stockbridge, strobridge, suffrage, sverige, trowbridge, umbrage, walbridge, waldridge, wooldridge