underfelt

verb
  1. 1

    To secretly gain knowledge from.

  2. 2

    To feel inadequately or to a lesser degree than expected.

noun
  1. 1

    A layer of felt-like material laid underneath a wall-to-wall carpet

Source: https://en.wiktionary.org/wiki/underfeel, https://en.wiktionary.org/wiki/underfelt