The story
From halal (“permissible according to Islamic law”) + -ball (“suffix used to denote a specific tactical style”). Used casually to imply wholesome, clean, or modest behavior in a footballing context.
Etymology from Wiktionary, CC BY-SA 4.0.
halalball
Today it means: A brand or style of football characterized by disciplined, clean play, strict tactical adherence, and modest or respectful conduct, both on and off the pitch; often associated with Muslim managers or players. Full definition →