Longman Dictionary of Contemporary English
The Collaborative International Dictionary
halfhearted \half"heart`ed\, Half-hearted \Half"-heart`ed\(-h[aum]rt`[e^]d), a.
Wanting in heart or spirit; ungenerous; unkind.
--B. Jonson.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.
Douglas Harper's Etymology Dictionary
Wiktionary
a. Not sincere; lacking full energy, effort, commitment, or resolve.
Usage examples of "half-hearted".
Suddenly he saw that some half-hearted attempt had been made to embellish the bleaky utilitarian structure with climbing plants, and that up the wall on one side of the door ran a scrap of denuded wooden trellis.
A half-hearted scuffle took place, and Mrs Botham limped down the passage to make her scandalized contribution.
He jest made a half-hearted attempt to bite me but all he done was to bite the buckle offa my gunbelt.
In his capacity of maid, with a basket on his arm, he went out into the little street, where in his shabby clothes he was recognized by none and leaned for a time against the mongrel, underfed tree that was hesitatingly greeting the spring with a few half-hearted leaves.
Smiling at her half-hearted invitation, Adonis grasped a bar in each hand and pried them apart.
Giving his king a half-hearted nod, Lukien turned and left the balcony, hoping Princess Cassandra refused her royal escort.
She cursed the homunculus under her breath, but even that release felt half-hearted.
Upon this the Boers made a half-hearted attempt, but Joubert had begun to realise the strength of the British reinforcements and the impossibility with the numbers at his disposal of investing a succession of British posts.
But either the burghers were half-hearted or there was no real intention to make a stand.
At dawn on September 22nd a half-hearted attempt was made by the commando of Erasmus to attack Elands River Station, but it was beaten back by the garrison.
Minogue thought of the pathetic fallacy and he made a half-hearted attempt to notice the school-children skipping by the pedestrians on the footpath.
The girl gave chase but in a half-hearted way as I scurried from corner to corner.
The shooting was sporadic, it almost sounded half-hearted in comparison with movie soundtracks, and it seemed to be moving here and there all around the cabins.
The thing that is really deadly to both is Conservatism of the half-hearted modern kind.
From some corner came a half-hearted "Olé," bespeaking in the far dark Croaker.