Preview: Prefix un- Worksheet
The prefix un- means "not" or "the opposite of." When you add un- to a word, it changes the meaning!
happy + un = unhappy (not happy) kind + un = unkind (not kind) fair + un = unfair (not fair) tie + un = untie (to reverse tying) clean + un = unclean (not clean) safe + un = unsafe (not safe)
- 1.If you are not happy, you are ___. (unhappy / happy / unkind)
- 2.A person who is not kind is ___. (kind / unkind / unfair)
- 3.If a game is not fair, it is ___. (fun / unfair / untie)
- 4.To reverse a tie, you must ___ it. (untie / retie / unfair)
- 5.A place that is not safe is ___. (safe / unsafe / clean)
- 6.Dirty hands are ___ hands. (unclean / happy / clean)
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About This Prefix un- Worksheet — Unhappy, Unkind, Unfair
This free printable prefix un- worksheet worksheet expands word knowledge through synonyms, antonyms, context clues, and word meanings. Understanding words deeply — not just memorizing definitions — builds stronger readers and writers.
What Students Will Learn
Students learn new word meanings, how to use context clues to figure out unknown words, and how words relate through synonyms and antonyms. A richer vocabulary improves reading comprehension and makes writing more precise.
How Teachers Can Use This Worksheet
- Context first: Present new words in a sentence and ask students to guess the meaning from context before giving the definition.
- Word webs: Have students build a web around each word — synonyms, antonyms, examples, and a picture.
- Use it three ways: Ask students to use each new word in a sentence, a question, and a short story to cement ownership.
How Parents and Homeschoolers Can Use This Worksheet
Talk about new words you meet in books, signs, and conversation. Play word games like "what is another word for big?" Encourage your child to use a new word in a sentence. Rich conversation is the best vocabulary builder.
Skills Covered
word meanings · synonyms · antonyms · context clues · word usage