Synonyms for Critical

Synonyms starting with letter I

• important

  necessity, grave, essential
• imperative

  essential
• indispensable

  necessity, vital
• integral

  vital, urgently important
• imperious

  querulous
• influential
• interpretative

  evaluative
• intense
• incisive
• instant
• impressive

  dynamic
• immediate

  essential
• intricate
• insulting
• importunate
• insistent
• impending

  menacing
• in the balance

  grave
• injurious
• ironic
• involved
• 

  intelligent
• irritated
• irked
• interpretive
• inescapable
• intrinsic
• irreplaceable

  vital
• inimical
• ironical
• irreverent
• insightful
• ingenious
• irascible
• irritable
• insecure
• inauspicious
• illustrative
• illuminative
• inflexible