Pronunciation change

Adjective change

Positive
acoustic

Comparative
none

Superlative
none

 
An acoustic guitar
  1. Related to hearing or sounds.
  2. (music) An acoustic instrument is played without electricity.
    I think music from an acoustic guitar is prettier than music from an electric guitar.

Noun change

Singular
acoustic

Plural
acoustics

  1. (countable) If a space has good acoustics (or sometimes acoustic) its physical structure makes it easy to hear sound in it.
    She hated singing in the gym because of the poor acoustics.

Related words change