Synonyms for Rational

Synonyms starting with letter I

• 

  intelligent

  reasonable, sensible, realistic
• 

  intellectual

  realistic
• impartial

  realistic, just
• insightful
• informed
• inquisitive

  penetrating
• imaginable
• inner
• intelligible
• imperturbable
• impressive
• inferable
• inventive
• inferential
• investigative
• interpretive
• inquiring
• incontrovertible
• imaginary
• irrational
• influential
• impassive
• invariable
• inexpensive
• intent
• inhibited
• in good health
• in the pink
• intuitive
• incisive
• insighted
• impeccable
• inclined
• in favor of
• in the cards
• in the habit of
• introspective
• in order
• intellective
• in right mind