/kə'prɪʃəs/ a. Syn. unpredictable; fickle; arbitrary (反复无常的) fickle; impulsive and unpredictable; apt to change opinions suddenly The storm was capricious: it changed course constantly.
/ɪn'ɛksərəb(ə)l/ a. Syn. unyielding; implacable (无情的,残酷的) not capable of being swayed; unyielding; implacable The judge was inexorable and gave the convicted man the maximum punishment allowed by law.
/'meɪlstrəm/ n. Syn. whirlpool (漩涡) whirlpool; powerful circular current of water The canoe was tossed about in the maelstrom, it had to leave the dangerous water quickly.