What is the meaning of trifling?

noun

• The deliberate act of delaying and playing instead of working.
  • synonyms: dalliance, dawdling

verb

• Waste time; spend one's time idly or inefficiently.
  • synonyms: piddle, wanton, wanton away, piddle away, trifle
• Act frivolously.
  • synonyms: frivol, trifle
• Consider not very seriously.
  • usage: "He is trifling with her"; "She plays with the thought of moving to Tasmania"
  • synonyms: dally, trifle, play

adjective

• Not worth considering.
  • usage: "he considered the prize too paltry for the lives it must cost"; "piffling efforts"; "a trifling matter"
  • synonyms: negligible, paltry