rival

n.竞争对手 a.竞争的 vt.与…竞争

riposte, ripple, rise, rise superior to, riser, risible, rising, rising damp, rising fives, risk, riskily, riskiness, risky, risotto, risque, rissole, rite, ritual, ritualize, ritzy, rivalry, rive, riven, river, river bed, river-bed, riverside, rivet, riveter, riveting, Riviera, rivulet, riyal, rly, RM, RN, RNA, RNIB, RNLI, roach,