Prefixes in English – In, Im, Un

Prefixes in English are one of the most complicated grammatical aspects to learn. Prefixes like im-, in-, un- can change the entire meaning of a sentance. They are small grammatical changes but with powerful consequences to the meaning of what you intend to say. Learning how and when to use prefixes in English is something LingoLearn’s teachers can walk you through until you are completely confident of how and when to use these powerful grammatical aspects. Have a look at our table below to see how confident you are in how to correctly use prefixes in English.

Want to learn more? Our native-speaking private teachers will be happy to customize an English course for your specific needs. Through a LingoLearn course, you can learn the proper use of prefixes and many other grammatical tools – online, from the comfort of your home.

Prefixes in English
im in un
+ + +
Patient Impatient Secure Insecure Important Unimportant
Moral Immoral Accurate Inaccurate Able Unable
Balance Imbalance Admissible Inadmissible Acceptable Unacceptable
Mature Immature (Advertently) Inadvertently Accustomed Unaccustomed
Partial Impartial Animate Inanimate Answered Unanswered
Penetrable Impenetrable Different Indifferent Anticipated Unanticipated
Perfect Imperfect Calculable Incalculable Button Unbutton
Polite Impolite Capable Incapable Called for Uncalled for
Mortal Immortal Coherent Incoherent Aware Unaware
Possible Impossible Comparable Incomparable Bearable Unbearable
Potent Impotent Compatible Incompatible Comfortable Uncomfortable
Practical Impractical Competent Incompetent Reasonable Unreasonable
Proper Improper Complete Incomplete Certain Uncertain
In Comprehensible Incomprehensible Conscious Unconscious
Equality Inequality Conclusive Inconclusive Common Uncommon
(Evitable) Inevitable Considerate Inconsiderate Concerned Unconcerned
Expensive Inexpensive Consistency Inconsistency Confirmed Unconfirmed
Explicable Inexplicable Convenience Inconvenience Damaged Undamaged
Explicit Inexplicit Correct Incorrect Decided Undecided
Famous Infamous Curable Incurable Do Undo
Flammable Inflammable Decency Indecency Easy Uneasy
Formal Informal Decisive Indecisive Employed Unemployed
Humane Inhumane Definite Indefinite Ending Unending
Sane Insane Dependence Independence Even Uneven
(Satiable) Insatiable Describable Indescribable Expected Unexpected
Tangible Intangible Direct Indirect Fair Unfair
Valid Invalid un Familiar Unfamiliar
Discretion Indiscretion Wrap Unwrap Fit Unfit
Effective Ineffective Veil Unveil Tie Untie
Prefixes in English

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