steam·y / ˈstēmē/ • adj. (steam·i·er, steam·i·est) producing, filled with, or clouded with steam: a small steamy kitchen. ∎ (of a place or its atmosphere) hot and humid: the hot, steamy jungle. ∎ inf. depicting or involving erotic sexual activity: steamy sex scenes a steamy affair.DERIVATIVES: steam·i·ly / -məlē/ adv.steam·i·ness / -ēnis/ n.