Thesaurus Worksheets - 15 Worksheets Library - Free Printable

Task Explanation:

The task requires identifying the word that is not a synonym for each bold word provided. To solve this, we need to understand the meaning of each bold word and compare it with the given options. A thesaurus can be used to find synonyms, but we can also rely on our understanding of vocabulary.

Solution:

#### 1. short-tempered
- irascible: Easily angered or irritable.
- sanguine: Optimistic and confident; calm and cheerful.

Explanation: "Irascible" is a synonym for "short-tempered" because both describe someone who gets angry easily. "Sanguine," however, means optimistic and calm, which is not related to being short-tempered.

Answer: Circle sanguine.

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#### 2. subterranean
- undersea: Below the surface of the sea.
- underground: Below the surface of the earth.

Explanation: "Underground" is a synonym for "subterranean" because both refer to something located below the surface of the earth. "Undersea" refers to something below the surface of the sea, which is not the same as subterranean.

Answer: Circle undersea.

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#### 3. illuminate
- lighten: Make lighter or brighter.
- widen: Make wider or broader.

Explanation: "Lighten" is a synonym for "illuminate" because both involve making something brighter. "Widen" refers to increasing the width of something, which is unrelated to illumination.

Answer: Circle widen.

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#### 4. somber
- gleeful: Full of joy or delight.
- serious: Solemn or grave.

Explanation: "Serious" is a synonym for "somber" because both describe a lack of cheerfulness or lightheartedness. "Gleeful" means full of joy, which is the opposite of somber.

Answer: Circle gleeful.

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#### 5. morose
- moody: Frequently changing in mood, often becoming sad or angry.
- gloomy: Depressed or melancholic.

Explanation: Both "moody" and "gloomy" are synonyms for "morose" because they all describe a negative or melancholic mood. None of the options is clearly not a synonym, but if forced to choose, "moody" might be slightly less directly related to "morose."

Answer: Circle moody (though both could be considered somewhat synonymous).

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#### 6. tedious
- boring: Uninteresting or dull.
- careful: Attentive and cautious.

Explanation: "Boring" is a synonym for "tedious" because both describe something that is uninteresting or dull. "Careful" means attentive and cautious, which is not related to being tedious.

Answer: Circle careful.

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#### 7. infuriate
- encourage: Inspire or support.
- anger: Make someone very angry.

Explanation: "Anger" is a synonym for "infuriate" because both involve making someone very angry. "Encourage" means to inspire or support, which is the opposite of infuriating.

Answer: Circle encourage.

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#### 8. obtuse
- ablong: Not a real word (likely a typo).
- dull-witted: Slow to understand or learn.

Explanation: "Dull-witted" is a synonym for "obtuse" because both describe someone who is slow to understand things. "Ablong" is not a real word, so it cannot be a synonym.

Answer: Circle ablong.

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#### 9. aggrieved
- agreement: Consensus or harmony.
- upset: Distressed or troubled.

Explanation: "Upset" is a synonym for "aggrieved" because both describe someone who is distressed or troubled. "Agreement" means consensus or harmony, which is the opposite of being aggrieved.

Answer: Circle agreement.

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#### 10. headstrong
- light-headed: Dizzy or confused.
- stubborn: Unwilling to change one's opinion or behavior.

Explanation: "Stubborn" is a synonym for "headstrong" because both describe someone who is determined and unwilling to change their mind. "Light-headed" means dizzy or confused, which is not related to being headstrong.

Answer: Circle light-headed.

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Final Answers:

1. sanguine
2. undersea
3. widen
4. gleeful
5. moody
6. careful
7. encourage
8. ablong
9. agreement
10. light-headed

Boxed Answer:
\boxed{sanguine, undersea, widen, gleeful, moody, careful, encourage, ablong, agreement, light-headed}