niggling

verb
  1. 1

    To trifle with; to deceive; to mock.

  2. 2

    To use, spend, or do in a petty or trifling manner.

  3. 3

    To dwell too much on minor points or on trifling details.

  4. 4

    To fidget, fiddle, be restless.

noun
  1. 1

    A sensation that niggles.

adjective
  1. 1

    Petty

Source: https://en.wiktionary.org/wiki/niggle, https://en.wiktionary.org/wiki/niggling