addendum, affix, allonge, appendix, bidet, bill, broncobuster, buckaroo, caballero, calendar, carriage horse, cart horse, cavalier, cavalry horse, cavalryman, chevalier, circus rider
, clause, coda, codicil, commentary, companion bills amendment, cowboy, cowgirl, cowpuncher, draft horse, dragnet clause, dray horse, driving horse, enacting clause, enclitic, envoi, epilogue, equestrian, equestrienne, escalator clause, fill horse, filler, gaucho, gigster, hack, hackney, hold-up bill, horse soldier, horseback rider
, horsebacker, horseman, horsewoman, hunter, infix, interlineation, interpolation, jockey, joker, jument, knight, lead, leader, marginalia, motion, mount, mounted policeman, note, omnibus bill, pack horse, palfrey, plow horse, pole horse, polo pony, post-horse, postboy, postilion, postscript, prefix, privileged question, proclitic, proviso, puncher, question, remount, riding horse, road horse, roadster, roughrider, rouncy, saddle horse, saddler, saving clause, scholia, shaft horse, stalking-horse, steeplechaser, suffix, sumpter, sumpter horse, supplement, tail, thill horse, thiller, trick rider
, vaquero, wheeler, wheelhorse, workhorse
adjunct, addition, additament, additum, affix, appelidage, annexe, annex, augment, augmentation, increment, reinforcement, supernumerary, accessory, item, garnish, sauce, accompaniment, adjective, addendum, complement, supplement, continuation, rider
, offshoot, episode, side issue, corollary, piece, flap, lappet, skirt, embroidery, trappings, cortege, tail, suffix, wing, additional, alate, alated, winged, in addition.
traveler, wayfarer, voyager, itinerant, passenger, commuter, tourist, excursionist, explorer, adventurer, mountaineer, hiker, backpacker, Alpine Club, peregrinator, wanderer, rover, straggler, rambler, bird of passage, gadabout, gadling, vagrant, scatterling, landloper, waifs and estrays, wastrel, foundling, loafer, tramp, tramper, vagabond, nomad, Bohemian, gypsy, Arab, Wandering Jew, Hadji, pilgrim, palmer, peripatetic, somnambulist, emigrant, fugitive, refugee, beach comber, booly, globegirdler, globetrotter, vagrant, hobo, night walker, sleep walker, noctambulist, runabout, straphanger, swagman, swagsman, trecker, trekker, zingano, zingaro, runner, courier, Mercury, Iris, Ariel, comet, pedestrian, walker, foot passenger, cyclist, wheelman, rider
, horseman, equestrian, cavalier, jockey, roughrider, trainer, breaker, driver, coachman, whip, Jehu, charioteer, postilion, postboy, carter, wagoner, drayman, cabman, cabdriver, voiturier, vetturino, condottiere, engine driver, stoker, fireman, guard, chauffeur, conductor, engineer, gharry-wallah, gari-wala, hackman, syce, truckman, on the road.