1. devoid of feeling and consciousness and animation

    Synonyms : insensate
    Antonyms : sentient
    Examples :
    • insentient (or insensate) stone


  1. of an obscure nature

    Synonyms : cryptic, cryptical, deep, mysterious, mystifying
    Examples :
    • the inscrutable workings of Providence


  1. bring something new to an environment

    Synonyms : introduce
    Type Of : initiate, pioneer


  1. not causing disapproval

    Synonyms : unobjectionable
    Examples :
    • it was an innocuous remark
    • confined himself to innocuous generalities
  2. lacking intent or capacity to injure

    Synonyms : innocent
  3. not injurious to physical or mental health

    Antonyms : noxious


  1. not established by conditioning or learning

    Synonyms : unconditioned, unlearned
  2. being talented through inherited qualities

    Synonyms : born, natural
    Examples :
    • an innate talent
  3. present at birth but not necessarily hereditary; acquired during fetal development

    Synonyms : congenital, inborn


  1. not friendly

    Synonyms : unfriendly
    Examples :
    • an inimical critic


  1. a person who shows no gratitude

    Synonyms : thankless wretch, ungrateful person
    Type Of : persona non grata, unwelcome person


  1. reason by deduction; establish by deduction

    Synonyms : deduce, deduct, derive
    Type Of : reason, conclude, reason out
  2. guess correctly; solve by guessing

    Synonyms : guess
    Type Of : work out, figure out, lick, puzzle out, solve, work
  3. believe to be the case

    Synonyms : understand
    Type Of : believe
  4. conclude by reasoning; in logic

    Synonyms : deduce
    Type Of : conclude, reason out, reason
  5. draw from specific cases for more general cases

    Synonyms : extrapolate, generalise, generalize
    Type Of : reason, reason out, conclude


  1. known widely and usually unfavorably

    Synonyms : ill-famed, notorious
    Examples :
    • the infamous Benedict Arnold


  1. incapable of failure or error

    Antonyms : fallible
    Examples :
    • an infallible antidote
    • an infallible memory
    • the Catholic Church considers the Pope infallible
    • no doctor is infallible