Prefix worksheet with exercises and a list of prefixes and their meanings.

Absolutely! Let's solve each question by selecting the most appropriate prefix from the provided list to form a correct and meaningful word based on the context.

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✔ Prefix List Recap (for reference):

| Prefix | Meaning | Examples |
|--------|----------------------|----------------------|
| il- | not | illegal, illogical |
| ir- | not | irrelevant, irregular|
| im- | not, without | impossible, improper |
| dis- | not, opposite, reverse| disagree, disappear |
| in- | not, without | inaction, invisible |
| mis- | bad, wrong | mistake, misplace |
| pre- | before | preview, prehistoric |
| re- | again, back | react, reappear |
| un- | against, not, opposite| undo, unusual |

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## 🔍 Now, let’s solve each question:

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1. He was unable to do his homework because he is _inattentive_ in class. (attentive)

✔ Already given as example — “in-” means “not”, so inattentive = not attentive.

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2. The teacher underlined the word in red as it was _________. (correct)

We need a word meaning “not correct”.
→ Look at prefixes: in-, im-, il-, ir- all can mean “not”.
But for “correct”, the correct prefix is “in-” → incorrect.
(“imcorrect” or “ilcorrect” are not valid words.)

✔ Answer: incorrect

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3. The suspect was sentenced in court for his _________. (honesty)

We need a word meaning “lack of honesty” → dishonesty.
→ Prefix “dis-” = not/opposite → dishonesty

✔ Answer: dishonesty

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4. The hospital staff must __________ the surfaces to prevent the spread of diseases. (infect)

We need a verb meaning “to make free from infection” → disinfect.
→ Prefix “dis-” = reverse/opposite → disinfect = remove infection.

✔ Answer: disinfect

*(Note: “uninfect” is not a real word; “deinfect” is archaic/rare — “disinfect” is standard.)*

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5. Tony was angry to find that he had been __________ in the robbery case. (led)

Meaning: He was misled → tricked or given false information.
→ Prefix “mis-” = bad/wrong → misled

✔ Answer: misled

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6. The mountains were __________ in the thick mist. (visible)

Meaning: Not able to be seen → invisible.
→ Prefix “in-” = not → invisible

✔ Answer: invisible

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7. The traffic warden gave me a ticket for __________ parking. (proper)

Meaning: Parking that is not proper → improper.
→ Prefix “im-” = not/without → improper

✔ Answer: improper

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## 📝 Final Answers:

1. inattentive *(given)*
2. incorrect
3. dishonesty
4. disinfect
5. misled
6. invisible
7. improper

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## 💡 Key Tips:
- Always check which prefix naturally pairs with the root word (e.g., *in-* + *correct* = *incorrect*, not *imcorrect*).
- Use context clues to determine if you need “not”, “wrong”, “again”, or “before”.
- Some roots only accept certain prefixes (e.g., “honesty” → “dishonesty”, not “inhonesty”).

Let me know if you’d like a printable version or flashcards for these prefixes! 😊