Definitions

1. adjective

relating to or characteristic of unamplified, unaccompanied, or unplugged music, especially that performed by acoustic instruments.

“The band’s unacoustic performance was a departure from their usual amplified sound.”

2. adjective

relating to or characteristic of a lack of sound or a reduction in sound levels.

“The city’s noise regulations aimed to create more unacoustic areas for residents.”

3. noun

a performance or recording of music that lacks amplification or accompaniment.

“The band’s unacoustic set was a huge hit at the music festival.”