shirtless

adjective
UK /ˈʃɜːtləs/
US /ˈʃɝːtləs/

Not wearing a shirt.

He ran along the beach shirtless.


OTHER MEANINGS

2. Having no shirt covering the upper body, often in sports or exercise.

The boxer entered the ring shirtless.

3. Lacking a shirt as part of an outfit, sometimes by choice or custom.

The kids played shirtless in the summer heat.

4. Without a shirt, as in a state of undress.

He answered the door shirtless and embarrassed.