im-
not
Usage
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impecunious
Someone who is impecunious has very little money, especially over a long period of time.
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immutable
Something that is immutable is always the same and cannot be changed.
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impervious
If you are impervious to things, such as someone's actions or words, you are not affected by them or do not notice them.
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impunity
If you say that someone does something with impunity, you dislike the fact that they are not being punished for doing something illegal.
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impudence
If someone demonstrates impudence, they behave in a very rude or disrespectful way.
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importunate
If you describe someone as importunate, you think that he is annoying and unreasonable because he keeps trying to get something from you.
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implacable
If someone is implacable, they very stubbornly react to situations or the opinions of others because of strong feelings that make them unwilling to change their mind.
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impassive
If someone is impassive, they are not showing any emotion.
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imperturbable
If someone is imperturbable, they are always calm and not easily upset or disturbed by any situation, even dangerous ones.
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impregnable
An impregnable opinion or feeling is very difficult to change.
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imprecation
An imprecation is a rude, offensive phrase or word that is said to someone or about someone especially when one is angry.
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impeccable
If you describe someone's appearance or behavior as impeccable, you mean that it is perfect and therefore impossible to criticize.
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impertinent
If someone behaves in an impertinent way, they behave rudely and disrespectfully.
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impasse
An impasse is a difficult situation in which progress is not possible, usually because none of the people involved are willing to agree.
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immaculate
Something that is immaculate is very clean, pure, or completely free from error.
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impenetrable
Something impenetrable cannot be gotten through by any means; for example, an impenetrable problem cannot be understood, and an impenetrable door allows nothing to pass through it.
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imperceptible
Something that is imperceptible is either impossible to be perceived by the mind or is very difficult to perceive.
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implausible
Something that is implausible is unlikely to be true or hard to believe that it's true.
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impromptu
An impromptu speech is unplanned or spontaneous—it has not been practiced in any way beforehand.
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improvise
When you improvise, you have to make something up with no notice ahead of time since you have been surprised by an unexpected situation that has arisen.
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imprudent
When you act in an imprudent fashion, you do something that is unwise, is lacking in good judgment, or has no forethought.
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immobile
If something is immobile, it is still, motionless, or incapable of moving.
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immense
Something immense is huge, very big, or extremely large.
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improvidence
Someone who is improvident does not think about providing for future events and needs, lacks foresight, and is not cautious or sensible.
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immediately
Something that happens immediately happens right away or instantly.
Related Word Sums
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