unison
1. [ noun ] occurring together or simultaneously
Examples:

: "the two spoke in unison"

Related terms: concurrence
2. [ noun ] corresponding exactly
Examples:

: "marching in unison"

Related terms: agreement
3. [ noun ] (music) two or more sounds or tones at the same pitch or in octaves
Examples:

: "singing in unison"

Related terms: sound music
Similar spelling:   unsung
  unsown
  unsent
  unseen
  unkind
  unsound
  unsnarl
  unsmooth
  unsanded
  unkindly
  unsounded
  unsnarled
  unseeing
  unkindled
  unconcern