unisonous

adjective

unis·​o·​nous

yüˈnisᵊnəs

1

: identical in musical pitch : in unison (see unison entry 1)

2

: alike in nature : concordant

Word History

Etymology

Medieval Latin unisonus

First Known Use

1705, in the meaning defined at sense 2

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now