Let’s go through each word one by one. We need to find the
prefix (added at the beginning) and the
suffix (added at the end) that were attached to the root word.
We’ll look at each word, break it apart, and figure out what was added.
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1.
misinformed
- Root: “inform”
- Prefix: “mis-” (means wrong or badly)
- Suffix: “-ed” (makes it past tense)
→ So: mis- + inform + -ed = misinformed
2.
unlikely
- Root: “like”
- Prefix: “un-” (means not)
- Suffix: “-ly” (turns adjective into adverb, but here it’s part of forming the adjective “unlikely”)
→ un- + like + -ly = unlikely
3.
encouragement
- Root: “courage”
- Prefix: “en-” (means to put into or cause to be)
- Suffix: “-ment” (turns verb into noun)
→ en- + courage + -ment = encouragement
4.
disgraceful
- Root: “grace”
- Prefix: “dis-” (means opposite or remove)
- Suffix: “-ful” (means full of)
→ dis- + grace + -ful = disgraceful
5.
unreasonable
- Root: “reason”
- Prefix: “un-” (not)
- Suffix: “-able” (capable of being)
→ un- + reason + -able = unreasonable
6.
reusable
- Root: “use”
- Prefix: “re-” (again)
- Suffix: “-able” (capable of being)
→ re- + use + -able = reusable
7.
bravely
- Root: “brave”
- Prefix: none (it starts with the root)
- Suffix: “-ly” (turns adjective into adverb)
→ brave + -ly = bravely
8.
unhappier
- Root: “happy”
- Prefix: “un-” (not)
- Suffix: “-er” (comparative form — more than)
→ un- + happy + -er = unhappier
9.
invaluable
- Root: “value”
- Prefix: “in-” (here it means “not”, though sometimes it can mean “into” — in this case, it means “so valuable it can’t be measured”)
- Suffix: “-able” (capable of being)
→ in- + value + -able = invaluable
10.
unfriendly
- Root: “friend”
- Prefix: “un-” (not)
- Suffix: “-ly” (turns noun into adjective meaning “having the quality of”)
→ un- + friend + -ly = unfriendly
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Now let’s write them all in order:
| Word | Prefix | Suffix |
|------------------|--------|--------|
| misinformed | mis- | -ed |
| unlikely | un- | -ly |
| encouragement | en- | -ment |
| disgraceful | dis- | -ful |
| unreasonable | un- | -able |
| reusable | re- | -able |
| bravely | | -ly |
| unhappier | un- | -er |
| invaluable | in- | -able |
| unfriendly | un- | -ly |
Note: For “bravely”, there is no prefix — so we leave that blank.
Final Answer:
Prefixes: mis-, un-, en-, dis-, un-, re-, (blank), un-, in-, un-
Suffixes: -ed, -ly, -ment, -ful, -able, -able, -ly, -er, -able, -ly
Parent Tip: Review the logic above to help your child master the concept of prefix and suffix worksheet.
