Prefix un- and re-

Prefixes: un- and re-

​Today is Thursday, March 20, 2025.

​Students will identify and define prefixes, understanding how they change the meaning of words.

Multiple Choice

How can prefixes change words?

• change color

• change numbers of letters

• change the meaning

Multiple Choice

Where is a prefix found in a word?

• at the beginning (Al principio)

• at the end (al final)

Multiple Choice

What is the prefix in this word?

disconnect

• dis

• connect

Multiple Choice

What is the prefix in this word?

recycle

• re

• cycle

Multiple Select

Choose all of the words that contain prefixes.

• disco

• reread

• review

• unfair

• disagree

​A base/root word is a word in its simplest form.  A

base/root word has nothing added to it.

​

Examples:

happy
do

write

roll

The prefix un- means not. 

  un + happy (contento) = unhappy (descontento)

  I am happy.

I am unhappy.

The prefix re- means again. 

  re + write (escribir) = rewrite (reescribir o escribir de nuevo)

  I write a sentence.

I rewrite the sentence.

The prefix dis- means opposite of. 

  dis + like (me gusta) = dislike (no me gusta)

  I like my birthday cake.

I dislike her birthday cake.

The prefix mis- means wrong,bad. 

  mis + behave (comportarse) = misbehave (comportarse mal)

  The students behaved in class, so the teacher gave them cookies.

The sister misbehaved at school, so Mom grounded her.

Multiple Choice

What does the prefix re- mean?

• again

• not

• opposite of

Multiple Choice

What does reread mean?

• read again

• do not read

• opposite of read

• before you read

​dis-

​The prefix dis – means not or opposite.

–dishonest means not honest.

–dislike means the opposite of like.

Multiple Choice

What does the prefix dis- mean?

• again

• not

• not or opposite of

Multiple Choice

What does disagree mean?

• agree again

• do not agree

• before you agree

​un-

​The prefix un – means not.

–Unhappy means not happy.

–Unkind means not kind.

Multiple Choice

What does the prefix un- mean?

• again

• not

• not or opposite of

​un-

​The prefix un – means not.

–Unhappy means not happy.

–Unkind means not kind.