affix, afford proof of, anchor, annex, ascertain, assure, attach, babe, back band, backstrap, band, bandage, bearing rein, belay, bellyband, belt, bend, bind, bind up, bit, blinders, blinds, boob, brace, breeching, breeze, bridle, bring home to, bundle, caparison, cavesson, cement, certify, chain, checkrein, cheekpiece, chinband, chump, clamp, clear up, clinch, collar, cramp, credulous person, crownband, crupper, cull, curb, dead-sure thing, decide, demonstrate, determine, dismiss all doubt, do up, dupe, easy mark, easy pickings, easy target, easy thing, engraft, ensure, establish, fall guy, fasten, find out, fish, fix, follow, follow from, fool, gag swivel, get at, gird, girdle, girt, girth, gobe-mouches, graft, grapple, greener, greenhorn, greeny, gudgeon, gull, hackamore, halter, hames, hametugs, harness, have a case, headgear, headstall, hip straps, hold good, hold water, horn, innocent, insure, jaquima, jerk line, jockey, knit, lace, lash, lead-pipe cinch, leadpipe cinch, leash, lines, make certain, make fast, make good, make no doubt, make no mistake, make out, make sure, make sure of, martingale, monkey, moor, nail down, natural, noseband, open-and-shut case, patsy, picnic, pie, piece of cake, pigeon, pipe, plaything, pole strap, pommel, prize sap, prove, prove to be, prove true, pushover, put to, reassure, reins, remove all doubt, ribbons, rope, saddle, sap, saphead, schlemiel, screw up, secure, see that, see to it, set, set at rest, set to, settle, settle the matter, setup, shaft tug, shoo-in, show, side check, sinecure, sitting duck, snaffle, snap, sort out, splice, stirrup, stooge, strap, sucker, surcingle, sure bet, sure card, sure success, sure thing, swaddle, swathe, tack, tackle, tie, tie up, tighten, toy, trappings, trice up, trim, truss, trusting soul, tug, velvet, victim, winker braces, winner, wire, wrap, wrap up, yoke