0pet=seek,表示"追寻,寻求"。competitive a 有竞争力的(compete+itive)
0compete 竞争 → competence n.胜任 → competent adj.有竞争力的 → competitive adj.竞争的
0-itive表形容词,"…的"。competitive a 比赛的(com 共同+pet 追求)