whits

/HH W IH1 T S/
noun
  1. 1

    The smallest part or particle imaginable; an iota.

    โ€œHe worked tirelessly to collect and wind a ball of string eight feet around, and it matters not one whit.โ€

Source: https://en.wiktionary.org/wiki/whit, https://en.wiktionary.org/wiki/whits