Definition of underclothes in English:
Clothes worn under others, typically next to the skin.
- Someone had undressed me during the course of my sleep, so I threw on a dressing gown over my underclothes.
- Rachael shuddered and flipped on the light, took her retainers out of her mouth, placed them in their case, and grabbed her underclothes and clothes and trundled into the bathroom to prepare her self for the day.
- My clothes, underclothes and boots, even my watch were stripped away.