frothy

/F R AO1 TH IY0/
noun
  1. 1

    (chiefly in the plural) A serving of beer.

adjective
  1. 1

    Foamy or churned to the point of becoming infused with bubbles.

    โ€œI like my milkshakes frothy, not flat like this!โ€

  2. 2

    Lightweight; lacking depth or substance

    โ€œa frothy argumentโ€

Source: https://en.wiktionary.org/wiki/frothy