half·heart·ed /ˈhæfˈhɑrtəd, ˈhɑf-/
(a.)不認真的,無興趣的,不熱心的
half·heart·ed, Half-heart·ed a.
1. Wanting in heart or spirit; ungenerous; unkind.
2. Lacking zeal or courage; performed with less than a full effort; lukewarm; unenthusiastic; as, a half-hearted attempt; -- of actions. [wns=1]
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halfhearted
adj : feeling or showing little interest or enthusiasm; "a
halfhearted effort"; "gave only lukewarm support to the
candidate" [syn: lukewarm]