The adjective listless means someone who has no energy or enthusiasm.

Synonyms are drowsy, dull, lethargic or sluggish.

The word origins from mid-15th century and it comes from Middle English liste meaning “pleasure, joy, delight” plus –less.

She soon became listless and bored.

The team couldn’t give an excuse for the listless effort they were putting in.

Why has the politics become so listless?