Power Prefixes for Sixth Grade Students: im- (not, opposite of)

Learn these common words starting with the prefix im meaning "not." The prefix im (deriving from the prefix in) is used before words starting with b, m, and p.
14 words 286 learners

Learn words with Flashcards and other activities

Definition First
Print Flashcards

Other learning activities

Answer a few questions about each word. Use this to prep for your next quiz! Compete with other teams in real time to see who answers the most questions correctly! Test your spelling acumen. Read the definition, listen to the word and try spelling it!

Teaching tools

Create and assign quizzes to your students to test their vocabulary. Assign learning activities including Practice, Vocabulary Jams and Spelling Bees to your students, and monitor their progress in real-time.

Full list of words from this list:

words only definitions & notes
  1. impossible
    not capable of happening or being done or dealt with
  2. impatient
    restless or short-tempered under delay or opposition
  3. impolite
    not showing regard for others in manners, speech, or conduct
  4. improper
    not suitable or right or appropriate
  5. immature
    not yet fully developed
  6. immobile
    not capable of movement or of being moved
  7. immortal
    not subject to death
  8. impure
    combined or contaminated with extraneous elements
  9. impersonal
    not relating to or responsive to individuals
  10. imprecise
    not sharply exact or accurate
  11. imbalance
    a lack of stability, evenness, or equilibrium
  12. impassive
    having or revealing little emotion or sensibility
  13. impractical
    not workable
  14. impenetrable
    not admitting of passage into or through
Created on Mon Jun 16 18:51:55 EDT 2025 (updated Mon Jun 16 18:52:30 EDT 2025)

Sign up now (it’s free!)

Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.