unenergetic
/ˌʌnˌɛnərˈdʒɛtɪk/
adjective
- Lacking energy, enthusiasm, or effort; sluggish or inactive.
- The team's unenergetic performance led to a loss.
- After the long hike, everyone felt unenergetic and just wanted to rest.
- His unenergetic response suggested he wasn't interested.