Synonyms for Sound

Synonyms starting with letter O

• orthodox

  accepted, logical, sensible
• out-and-out

  thorough
• operate
• okay
• orderly
• of sound mind
• outcry
• on the level
• objective
• obvious
• original
• on the money
• outright
• operative
• of good quality
• offend
• oppress
• on ice
• occur
• overwhelm
• overflow
• official
• on the nose
• out of danger
• out-of-this-world
• obedient
• oriented
• on sale
• outline
• on the ball
• obstructed
• organized
• omniscient
• on the up and up
• obligatory
• open and shut
• on the go
• overdue
• ordained
• old-line