play fair/straight

play fair

To act, behave, or play fairly and justly; to observe the rules or the laws; to not cheat or betray the spirit of something. Often used in negative formations. If you don't play fair, no one is going to want to play games with you anymore! The watchdog accused the giant multinational corporation of not playing fair with its tax obligations. Everyone I know cheats the system to their advantage, so why should I have to be the one to play fair?
See also: fair, play

play straight

To act, behave, or play fairly and justly; to observe the rules or the laws; to not cheat or betray the spirit of something. Often used in negative formations. If you don't play fair, no one is going to want to play games with you anymore! The watchdog accused the giant multinational corporation of not playing fair with its tax obligations. Everyone I know cheats the system to their advantage, so why should I have to be the one to play fair?
See also: play, straight
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

play fair

to do something by the rules; to play something in a fair and just manner. John won't play with Bill anymore because Bill doesn't play fair. You moved the golf ball with your foot! That's not playing fair!
See also: fair, play
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

play fair

Behave honestly and honorably, obey the rules, as in Not every supplier we deal with plays fair, or We can't just leave them to find their own way back-that's not playing fair. Although this idiom conjures up playing by the rules in some game or sport, it actually has been used in this figurative way since the mid-1400s. Also see play the game.
See also: fair, play
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

play fair

observe principles of justice; avoid cheating.
See also: fair, play
Farlex Partner Idioms Dictionary © Farlex 2017

play ˈfair/ˈstraight (with somebody)

act honestly and fairly: I don’t think it’s playing fair to blame her for other people’s mistakes.
See also: fair, play, straight
Farlex Partner Idioms Dictionary © Farlex 2017
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