English edit

Etymology edit

plunk +‎ -y

Adjective edit

plunky (comparative plunkier, superlative plunkiest)

  1. (informal) Making a plunking sound.
    • 2000, Larry Sandberg, The Acoustic Guitar Guide:
      In order to try to hear these qualities in your mind's ear, try to re-create in your mind the plunky sound of a banjo and to differentiate it from the more singing sound of an acoustic guitar.