Wiktionary
a. Not energetic; without energy.
WordNet
adj. not inclined to be enterprising [syn: slowgoing]
Usage examples of "unenergetic".
Objects there were frigid and unenergetic, exceptionally difficult to detect.
To this cause, I am convinced, is to be attributed their thin faces, their pale skins, their unenergetic temperament--unenergetic as regards physical motion--and their early old age.
He was also handsome, but unenergetic, with a tendency to bad legs, and a dislike for female society and public worship.
Here tennis was played on grass courts, while in the Horse Shoe Piazza, Mullalay's orchestra could be heard throughout the day as unenergetic ladies took the air, often together, while the energetic men were all at sea in sailboats and the unenergetic ones had withdrawn to the Casino's Reading Room, where they were safe from ladies, cads and books.