'halfhearted' definitions:

Definition of 'halfhearted'

(from WordNet)
adjective
Feeling or showing little interest or enthusiasm; "a halfhearted effort"; "gave only lukewarm support to the candidate" [syn: halfhearted, half-hearted, tepid, lukewarm]

Definition of 'halfhearted'

From: GCIDE
  • halfhearted \half"heart`ed\, Half-hearted \Half"-heart`ed\(-h[aum]rt`[e^]d), a.
  • 1. Wanting in heart or spirit; ungenerous; unkind. --B. Jonson. [1913 Webster]
  • 2. Lacking zeal or courage; performed with less than a full effort; lukewarm; unenthusiastic; as, a half-hearted attempt; -- of actions. [WordNet sense 1] --H. James. [1913 Webster +PJC]

Synonyms of 'halfhearted'

From: Moby Thesaurus