Word Structure: Identify Incorrect Root or Affix Usage in Made-Up Words Quiz

  • 8th Grade
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| Questions: 20 | Updated: Jan 7, 2026
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1. The invented word Postgo is formed correctly using the prefix post- (after) and the common root go (to move).

Explanation

This is false. The prefix post- typically attaches to Latin roots or established words (e.g., postmodern, postscript) and does not usually combine with simple Anglo-Saxon verbs like 'go.'

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About This Quiz
Word Structure: Identify Incorrect Root Or Affix Usage In Made-up Words Quiz - Quiz

Understanding word structure helps identify what works—and what doesn’t. In this incorrect affix usage quiz, you’ll examine invented words to determine whether roots and affixes are used correctly. You’ll analyze logic, apply word-formation rules, and spot inconsistencies. Each question sharpens analytical thinking and deepens understanding of how words are constructed.

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2. Which made-up word uses the suffix incorrectly based on the type of word it modifies?

Explanation

The root is 'beautify' (a verb). The suffix -ment (state, result of) is correctly applied to verbs, but the combination of the verb stem + -ment is often redundant or replaced by a simpler noun (Beautification or Beauty).

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3. Which invented words are grammatically incorrect because the prefix and root overlap in meaning (redundancy)? (Select all that apply)

Explanation

Reagain is redundant because re- already means 'again.' Non-unnecessary creates a double negative, meaning 'not not necessary,' which is overly confusing.

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4. Question: The prefix ex- means 'out of.' The invented word Exgo is incorrectly formed because the prefix ex- typically requires a Latin root, such as the correct word exit (ex- + it, meaning to _______).

Explanation

The prefix ex- usually joins with a Latin root. The correct word, exit, uses the Latin root it (to go).

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5. Why is the invented word Unfeelable incorrectly or awkwardly formed?

Explanation

While grammatically possible, the accepted word for 'not capable of being felt' is the Latin-derived intangible or imperceptible. The English root combination is not standard.

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6. The word contra is always a prefix and cannot stand alone as a root word.

Explanation

This is false. Contra is used as a standalone word (e.g., 'to argue contra') or as a root word in phrases (e.g., 'pro and contra').

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7. Which invented word uses a prefix that changes the word's meaning in a contradictory way?

Explanation

The prefix anti- means 'against' or 'opposed to.' It makes little sense to be 'against the action of driving.' The other options use prefixes that logically modify their roots.

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8. Which invented words would be considered incorrect because the affix is attempting to create a part of speech that doesn't exist? (Select all that apply)

Explanation

Beautifullyly adds an unnecessary second adverb suffix. Tablement attempts to add a suffix that forms a noun from a verb, to a noun (table), creating an awkward combination.

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9. Question: The root ject means 'to throw.' The invented word Rejectment is incorrectly formed because the suffix -ment should attach to a non-existent word. The correct noun is rejection, which uses the suffix _______.

Explanation

The suffix -ion is the correct suffix used to form the noun from the verb stem (re- + ject) to create rejection.

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10. Why is the invented word Intercommunicate incorrectly formed?

Explanation

The verb 'communicate' already means 'to share or exchange information.' The prefix inter- (between/among) is unnecessary because the root already implies this mutual action.

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11. The invented word Infamousful is incorrectly formed because it uses a prefix and a suffix with different origins (in- Latin, -ful Old English) that don't belong together.

Explanation

This is false. Many English words combine prefixes and suffixes of different origins (e.g., unforgettable). The word is awkward because it attaches the suffix -ful to the adjective infamous.

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12. Which invented word incorrectly attempts to create a comparative adjective?

Explanation

More bigger is an error called a double comparative; the word should only be bigger (or more big/great).

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13. Which invented words use a prefix that creates a contradictory or illogical meaning? (Select all that apply)

Explanation

Antibirth (against the action of being born) and Noncomplete (not already finished) are illogical combinations. Unseenable is awkward/incorrectly formed as the correct word is invisible.

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14. Question: The root gress means 'to step.' The invented word Regressment is incorrect because the suffix -ment cannot attach here. The correct noun form is regression, which uses the suffix _______.

Explanation

The suffix -ion is the correct suffix used to form the noun from the verb stem (re- + gress) to create regression.

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15. Why is the invented word Demotivateable awkwardly formed?

Explanation

The suffix -able is meant to attach to a simpler form of the root. The correct word is likely demotivator or a rephrasing, but not Demotivateable.

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16. The invented word Precautionize is incorrectly formed because it combines the noun precaution with the verb-creating suffix -ize.

Explanation

This is true. The word already has the prefix pre- (before) and the root cautio (caution). Adding -ize to the full noun is awkward and unnecessary.

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17. Which invented word uses the wrong prefix to mean 'wrongly' or 'badly'?

Explanation

The prefix for meaning 'wrongly' or 'badly' is mis- or mal-. The prefix un- means 'not' or 'opposite of,' so Unjudge means 'not to judge,' not 'to judge wrongly.'

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18. Which invented words are grammatically incorrect due to double or awkward suffix usage? (Select all that apply)

Explanation

Comfortableness and Quicklyness are incorrectly formed by attaching the noun-forming suffix -ness to an adjective (comfortable) or an adverb (quickly). The correct form would be comfort and quickness.

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19. Which invented word is incorrectly formed because its prefix contradicts the root meaning?

Explanation

The prefix pre- means 'before' or 'beforehand,' but the root vis means 'to see.' You cannot 'see before' something is able to be seen. 'Predictable' is correct, but 'Previsible' is nonsensical.

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20. Question: The invented word Unhearable (un- + hear + -able) is technically correctly formed. However, the real word with the same meaning, using a different Latin-derived prefix, is _______.

Explanation

The correct word is inaudible, which uses the Latin prefix in- (not) and the root aud (to hear).

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The invented word Postgo is formed correctly using the prefix post-...
Which made-up word uses the suffix incorrectly based on the type of...
Which invented words are grammatically incorrect because the prefix...
Question: The prefix ex- means 'out of.' The invented word Exgo is...
Why is the invented word Unfeelable incorrectly or awkwardly formed?
The word contra is always a prefix and cannot stand alone as a root...
Which invented word uses a prefix that changes the word's meaning in a...
Which invented words would be considered incorrect because the affix...
Question: The root ject means 'to throw.' The invented word Rejectment...
Why is the invented word Intercommunicate incorrectly formed?
The invented word Infamousful is incorrectly formed because it uses a...
Which invented word incorrectly attempts to create a comparative...
Which invented words use a prefix that creates a contradictory or...
Question: The root gress means 'to step.' The invented word...
Why is the invented word Demotivateable awkwardly formed?
The invented word Precautionize is incorrectly formed because it...
Which invented word uses the wrong prefix to mean 'wrongly' or...
Which invented words are grammatically incorrect due to double or...
Which invented word is incorrectly formed because its prefix...
Question: The invented word Unhearable (un- + hear + -able) is...
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