fair play
noun
[ ˌfɛː ˈpleɪ ]
• respect for the rules or equal treatment of all concerned.
• "he's a player recognized for his sense of fair play"
Similar:
justice,
justness,
fair-mindedness,
equity,
equitableness,
even-handedness,
impartiality,
lack of prejudice,
open-mindedness,
play fair
• observe principles of justice; avoid cheating.
• "he decided to play fair and own up"