ぐしぐし

ぐしぐしgushigushi

adverb

  1. grumbling
  2. complaining
  3. muttering
  4. crumpling (e.g. paper)

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences