combat sport; martial art; one-on-one fighting sport
Refers to competitive, unarmed fighting disciplines such as judo, karate, boxing, or MMA. The English gloss 'one-on-one fighting sport (without weapons)' captures the core idea, but modern usage often includes weaponless martial arts broadly.
He has been learning martial arts since he was a child.
Mixed martial arts is growing in popularity around the world.
I've been practicing combat sports since I was a child.
He became a professional combat sport fighter.
I'm planning to enter a combat sport tournament next month.
I started going to a combat sport gym for my health.