halfhearted

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

feeling or showing little interest or enthusiasm
- a halfhearted effort
- gave only lukewarm support to the candidate
• Syn:
half-hearted, tepid, lukewarm
• Similar to:
unenthusiastic
• Derivationally related forms:
lukewarmness (for: lukewarm), tepidness (for: tepid)