LANGUOROUS
dreamy, lackadaisical, languid, languorous
(adjective) lacking spirit or liveliness; “a lackadaisical attempt”; “a languid mood”; “a languid wave of the hand”; “a hot languorous afternoon”
Source: WordNet® 3.1
Etymology
Adjective
languorous (comparative more languorous, superlative most languorous)
lacking energy, spirit, liveliness or vitality; languid, lackadaisical.
Source: Wiktionary
Lan"guor*ous, a. Etym: [From Languor: cf. F. langoureux.]
Definition: Producing, or tending to produce, languor; characterized by
languor. [Obs. or Poetic]
Whom late I left in languorous constraint. Spenser.
To wile the length from languorous hours, and draw The sting from
pain. Tennyson.
Source: Webster’s Unabridged Dictionary 1913 Edition