trifle with (someone or something)

trifle with (someone or something)

To treat or deal with someone or something in a frivolous or disrespectful manner. Often used in passive constructions. You can't just go through life trifling with people and their affections without any regard for their wellbeing. I wouldn't do that if I were you—the plans of the boss are not to be trifled with.
See also: trifle

trifle with someone or something

to act without seriousness or respect toward someone or something. Don't talk that way to me! I am not to be trifled with. I wish that Ann wouldn't trifle with our efforts at reform.
See also: trifle

trifle with

v.
To play or toy with someone or something: Don't trifle with my affections. My strict boss is not someone to be trifled with.
See also: trifle