sparring partner
US /ˈspɑːr.ɪŋ ˌpɑːrt.nər/
UK /ˈspɑːr.ɪŋ ˌpɑːrt.nər/

1.
Sparringspartner
a person with whom one spars in training, especially in boxing or martial arts
:
•
The boxer trained with his sparring partner every day.
Der Boxer trainierte jeden Tag mit seinem Sparringspartner.
•
She needs a strong sparring partner to improve her technique.
Sie braucht einen starken Sparringspartner, um ihre Technik zu verbessern.
2.
Sparringspartner, Diskussionspartner
a person with whom one argues or debates, especially to sharpen one's own arguments or ideas
:
•
He considers his colleague a valuable sparring partner for new ideas.
Er betrachtet seinen Kollegen als wertvollen Sparringspartner für neue Ideen.
•
The CEO often uses his advisors as sparring partners to test strategies.
Der CEO nutzt seine Berater oft als Sparringspartner, um Strategien zu testen.