queasiest

/K W IY1 Z IY0 AH0 S T/
adjective
  1. 1

    Experiencing or causing nausea or uneasiness, often characterized by an unsettled stomach.

  2. 2

    Easily troubled; squeamish.

Source: https://en.wiktionary.org/wiki/queasiest, https://en.wiktionary.org/wiki/queasy