Synonyms for Rational

Synonyms starting with letter O

• of sound mind

  sane, lucid
• objective

  realistic
• orderly
• ordered
• organized
• ordinary

  practical
• orthodox
• of a piece
• okay
• observant
• ostensible
• odds-on
• on the verge of
• oriented
• obvious
• original
• operative
• obstinate
• odds on
• open
• open-minded
• on the level
• on up-and-up
• official
• organised
• on purpose
• on the ball
• observing
• on to
• open to reason