be full of confidence;be fully confident of ❍ 成岗用力地捏着小萝卜头的小手，用～的口吻安慰着他：……(罗广斌、杨益言《红岩》407)Cheng Gang once more pressed Little Turnip's hands and said confidently,.../李敬原说得～，强烈地鼓舞着年轻姑娘的斗志，……(罗广斌、杨益言《红岩》154) The confidence in Li Jingyuan's voice greatly encouraged the young girl.
满怀信心mǎn huái xìn xīn
心中充满了信心。with full confidence, be fully confident of, get one’s tail up