i Register
In some senses, steamy is marked as figuratively, colloquial. Watch for register when choosing this word.
adj
Warm and humid; full of steam.
My glasses fogged up when I walked into the steamy room.
Resembling or characteristic of steam.
Erotic.
Her latest novel was very steamy, but still managed to top the charts.
I'm having a steamy affair with an Armenian boxer.