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Prefixes that mean not

You learn the prefixes that mean not: un-, dis-, in-, im-, il- and ir-.

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How to do the test

  1. A prefix goes at the front of a word and changes its meaning.
  2. Use un-, dis-, in-, im-, il- or ir- to say not.
  3. Check the first letter: il- goes before l, ir- before r, im- before m or p.

Add a prefix to make the opposite. The opposite of "visible" is ___.

  1. Add the prefix in- to the front of visible.
  2. The prefix in- means not.
  3. It goes before most words.
  4. The opposite of visible is invisible.
More examples

Add a prefix to make the opposite. The opposite of "fair" is ___.

  1. Add the prefix un- to the front of fair.
  2. The prefix un- means not.
  3. The opposite of fair is unfair.

Add a prefix to make the opposite. The opposite of "appear" is ___.

  1. Add the prefix dis- to the front of appear.
  2. The prefix dis- means not or the opposite of.
  3. The opposite of appear is disappear.