Synonyms of lethargically

2 Syllables
dimly, calmly, slowly, dully
3 Syllables
listlessly, tardily, lazily, languidly, densely, sluggishly, gradually, laggardly, torpidly, easily
4 Syllables
comfortably, indolently, langorously, lingeringly, composedly
5 Syllables
dilatorily, inactively
6 Syllables
deliberately