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LL.1 Identify base words, prefixes, and suffixes

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What are prefixes and suffixes?

Prefixes are word parts added to the beginning of a base word. Suffixes are word parts added to the end of a base word. Both can change the meaning of the base word.

Examples:
  • Prefix: un + happy = unhappy (not happy)
  • Suffix: help + ful = helpful (full of help)
Helpful hint

Look carefully: A prefix comes at the front, and a suffix comes at the end.

Why do writers use prefixes and suffixes?

Prefixes and suffixes help writers and readers understand and create new words. They add meaning and make language more precise.

Examples:
  • Base word: play
  • With suffix: play + er = player (a person who plays)
  • With prefix: re + play = replay (to play again)
Helpful hint

Adding a prefix or suffix changes the meaning. Always check what the new word means in the sentence.

Common prefixes

Prefixes change the meaning of a base word. Here are some you will see often:

Prefixes List:
  • un- = not (unfair, unhappy)
  • re- = again (replay, redo)
  • pre- = before (preheat, preview)
Helpful hint

When you see a prefix, think: β€œWhat does this add to the meaning of the word?”

Common suffixes

Suffixes also change meaning, often showing a job, state, or quality. Here are some common suffixes:

Suffixes List:
  • -er = a person who does something (teacher, singer)
  • -ful = full of (helpful, joyful)
  • -less = without (hopeless, careless)
Helpful hint

A suffix can change a noun into a person or describe how much of something there is.

Putting it all together

When you know prefixes and suffixes, you can figure out the meaning of many new words. This makes reading and writing easier and stronger.

Examples:
  • un + kind = unkind (not kind)
  • care + ful = careful (full of care)
  • re + write = rewrite (to write again)
Helpful hint

Remember: Knowing the meaning of word parts helps you unlock new vocabulary.