trifling

Etymology

adj

1. Trivial, or of little importance.
   […] it doesn't take him long to make any of them, and he sells them for some trifling sum of money. 2005, Plato, translated by Lesley Brown, Sophist, page 234a
2. Idle or frivolous.
3. (African-American Vernacular) Of suspicious character, typically secretive or deceitful; shady.
   My hand was aching to slap that silly heifer. I told her to take her trifling ass down to Burger King and get herself a job flipping burgers […] 2001, Glenda Howard, Cita's World

noun

1. The act of one who trifles; frivolous behaviour.
   He writes on the principle, of course, that in one's dotage we are privileged to return to the triflings of our infancy, and that Downing Street cannot be better employed in these days than as a chapel of ease to Eton. 1845, George Croly, Samuel Warren, Marston, or the Memoirs of a Statesman

verb

1. present participle and gerund of trifle