fretless

/ˈfrɛtləs/
adjective
  1. Describing a stringed instrument that has no frets (the metal strips on the neck), so the player must press the strings directly onto the wood to get different notes.
    • He prefers playing a fretless bass for its smooth, sliding sound.
    • A cello is a fretless instrument, unlike a guitar.
    • Learning to play a fretless instrument requires a good ear for pitch.
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What does "fretless" mean? | whatsthatwordmean | whatsthatwordmean