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Prefixes: Un, Dis, Im, Mis

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A prefix is placed at the beginning of a word to change its meaning. For example, the suffix re- means either again or back as in return, repeat or refurbish.

The following 4 prefixes are easy to confuse because they all have a negative meaning.

un-

The prefix un means not, reverse action, deprive of, release from. For example, unable or unfair.

mis-

The prefix mis means wrong. For example, mistake or misunderstand.

dis-

The prefix dis also means not and opposite of. For example, disconnect.

im-

The prefix im can also mean not and opposite of. For example, impossible,

Now choose the correct prefix in the following sentences:

  • 1. Available: I tried to speak to the professor, but he was ___.





  • 2. Avoidable: The accident was ___.





  • 3. Appeared: My keys seem to have ___. I can't find them anywhere!





  • 4. Understood: I think I've ___. Could you please repeat the directions?





  • 5. Tidy: Kevin is so ___. His room is always a mess.





  • 6. Informed: He was angry to find that he had been ___.





  • 7. Agree: I think it's a bad idea. I totally ___.





  • 8. Possible: It's ___ to predict the weather around here.





  • 9. Honest: She was devastated when she realised he had been ___.





  • 10. Polite: I thought she was very ___. She kept interrupting me.