THESAURUS
back seat
afterpart, afterpiece, back, back door, back side, behind, breech, heel, hind end, hind part, hindhead, humbleness, humility, inferiority, juniority, lowliness, minority, occiput, posterior, postern, rear, rear end, rearward, reverse, second fiddle, second string, secondariness, servility, stern, subjection, subordinacy, subordination, subservience, tail, tail end, tailpiece, third string
