prefix 'im' and its rules

This language lesson is designed for 6 to 12-year-old children to help them understand what is a prefix and how the meaning of the word changes when the prefix ‘im’ is applied.

What is a Prefix?

 A prefix is a word or a group of letters that are placed at the beginning of any word. Adding a prefix changes the meaning of the base word by forming a new word. 

A few examples of prefixes are im, in, un, re, ar, etc.

One of the most difficult aspects of English grammar is learning prefixes. These are small grammatical changes, but they have a major effect on the meaning of the word. Learning how and when to use prefixes in English helps a child become confident. It also teaches them how and when to use them while writing various articles, stories, etc. 

What is Prefix ‘im’?

A Prefix ‘im’ is used in the following two situations:

  1. Meaning not or no: when the prefix ‘im’ is used with some adjectives and nouns that begin with b, m, or p, it states the opposite meaning. For example immortal, immature, imperfect, etc.
  2. When used before words beginning with m and p, it means in, into, towards, or within. For example implant, immigration, etc.

Some Common Examples of the Prefix ‘im’

  • word: words with the prefix ‘im’
  • Patient: Impatient
  • Moral: Immoral
  • Balance: Imbalance
  • Mature: Immature
  • Partial: Impartial
  • Penetrable: Impenetrable
  • Perfect: Imperfect
  • Polite: Impolite
  • Measurable: Immeasurable
  • Port: Import
  • Practical: Impractical
  • Munize: Immunize
  • Mortal: Immortal
  • Possible: Impossible
  • Potent: Impotent
  • Proper: Improper

Watch the video to learn how to use the prefix ‘im’ before words and how it changes the meaning of the word.

Encourage the child to practice this concept with different English words and help them add new words to their vocabulary.

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Video Created by: Justine McNeilly


  • elementary level
  • English
  • english language
  • Language
  • language development