13 letter adjectives that start with I

We have listed 85 13-letter adjectives that start with I for you in this WordMom word list. All these 13-letter adjectives starting with I were verified by specialists in the English language.

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  • iatrochemical
  • ichneumonidan
  • idiosyncratic
  • ideographical
  • idiographical
  • idiorepulsive
  • imperceptible
  • impressionist
  • impermissible
  • imperturbable
  • impracticable
  • imperialistic
  • immunological
  • imperfectible
  • imparipinnate
  • implicational
  • impassibility
  • imputrescible
  • imperceivable
  • imperseverant
  • imaginational
  • immarcescible
  • improvisatory
  • imprejudicate
  • impreventable
  • impassionable
  • imperspicuous
  • impersuadable
  • impersuasible
  • improgressive
  • impertrubable
  • impresionable
  • inconspicuous
  • indiscernible
  • insignificant
  • incombustible
  • incontestable
  • indescribable
  • insusceptible
  • indeterminate
  • indispensable
  • international
  • institutional
  • interlocutory
  • inexhaustible
  • instructional
  • individualist
  • incorruptible
  • insectivorous
  • inconceivable
  • inexperienced
  • introspective
  • insubordinate
  • insubstantial
  • indefatigable
  • inexpressible
  • interrogative
  • interrogatory
  • inspirational
  • incriminating
  • incriminatory
  • infinitesimal
  • inappreciable
  • inconsiderate
  • insupportable
  • inquisitorial
  • instantaneous
  • investigative

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  • irrepressible
  • irresponsible
  • irretrievable
  • irreclaimable
  • irrecoverable
  • irreplaceable
  • irrefrangible
  • irrepleviable
  • irremunerable
  • irretraceable
  • irrecuperable
  • isospondylous
  • isobarometric
  • isodimorphous
  • isogeothermal
  • isogeothermic
  • isotrimorphic

13 letter adjectives that start with