sparring partner
sparring mate

Gideon soon became more than just a good sparring partner.

"It's very difficult fighting your sparring partner," Jones said.

"I can always use a good sparring partner."

Aoi is the first sparring partner that Maria does not injure.

He was a daunting intellectual sparring partner and an obdurate sermonizer on every subject.

At Oxford he met Lewis, who became his closest friend and favorite intellectual sparring partner.

This required a constant interlocutor or intellectual sparring partner.

He caught the eye of his old sparring partner, Skull-Face.

Her romantic sparring partner, Benedick, has not been cast.

"Your old sparring partner is persona non grata with us all at this moment in time."