piffling

/P IH1 F L IH0 NG/
verb
  1. 1

    To act or speak in a futile, ineffective, or nonsensical manner.

  2. 2

    To waste, to fritter away.

  3. 3

    To be squeamish or delicate.

adjective
  1. 1

    Unimportant

Source: https://en.wiktionary.org/wiki/piffle, https://en.wiktionary.org/wiki/piffling