halfhearted

a. 不认真的,无兴趣的,不热心的

half-light, half-listen, half-mast, half-naked, half-note, half-price, half-seas-over, half-sister, half-size, half-term, half-timbered, half-time, half-tone, half-track, half-truth, half-way, half-whisper, half-wit, half-witted, half-yearly, halfpenny, halfpennyworth, halfway, halibut, halide, halitosis, hall, hall of residence, hall-stand, hallal, hallelujah, halliard, hallmark, hallo (also hello, hullo), halloo, hallow, hallowed, Halloween, hallucinate, hallucination,