"Halfhearted" means lacking enthusiasm, interest, or effort towards a particular task or goal. It suggests that someone is not fully committed or dedicated to what they are doing. Full definition
He was a dabbler, discarding careers in diplomacy and the military for halfhearted attempts at stock trading and journalism. (bookbrowse.com)
For entry - level employees putting forth halfhearted effort may decrease productivity and stagnate upward mobility; for a CEO, president, or board member, career ennui can affect an entire corporation. (executiveresumesatlanta.com)
The story mode is eminently brief and unravels precisely nothing of narrative value, concluding with less of a cliffhanger and more of the kind of twist you'd find in halfhearted Creepypasta. (thejimquisition.com)