Definition
To ignore proper behavior or social conventions, especially when it suits one's purpose.
To be recklessly inaccurate, inappropriate, or otherwise ignoring guidelines and conventions.
To act in a tricky, inconstant way, saying one thing and doing another.
Origins
From the con game fast and loose.
In Context
- "I cannot say that there were any outright lies in the editorial, but it does play fast and loose with the truth."