Nouns

(n)languor, dreaminessa relaxed comfortable feeling
(n)languoroppressively still air“the afternoon was hot, quiet, and heavy with languor”, “Summer shows all the languor of a hot, breezeless day as the dancer lazily brushes her hand over her brow”
(n)languor, lassitude, listlessnessa feeling of lack of interest or energy
(n)languor, lethargy, sluggishness, phlegm, flatnessinactivity; showing an unusual lack of energy“the general appearance of sluggishness alarmed his friends”