diapason /dī-ə-pāˈzən, -sən/ (music)

1. A full volume of various sounds in concord
2. The whole range or compass of tones
3. A standard of pitch
4. A whole octave (obsolete)
5. A bass part (obsolete)
6. Harmony (obsolete)
7. A foundation-stop of an organ (open or stopped diapason) extending through its whole range

• unstructured
• unstrung
• unstuck
• unstudied
• unstuffed
• unstuffy
• unstuft
• unsubduable
• unsubdued
• unsubject
• unsubjected
• unsublimated
• unsublimed
• unsubmerged
• unsubmissive
• unsubmitting
• unsubscribe
• unsubscribed
• unsubscribes
• unsubscribing
• unsubsidised
• unsubsidized
• unsubstantial
• unsubstantialise
• unsubstantialised