5th Grade Vocabulary Words - List 24
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| Word | Definition | Practice Sentence | Synonyms | Antonyms | Part of Speech Description |
|---|---|---|---|---|---|
| silly | Showing a lack of judgment; foolish. | He was talking in a silly voice all day. | crazy, ridiculous, childish | sensible | Adjective |
| determine | Come to a decision as a result of research. | I was able to determine the origin of the noise. | detect, ascertain, verify | Verb | |
| zealous | Showing zeal. | The zealous salesperson followed us around the store. | enthusiastic, avid, passionate | indifferent, apathetic | Adjective |
| defiant | Likely to challenge or resist. | The defiant child kicked his feet and screamed. | aggressive, challenging, insubordinate | obedient | Adjective |
| deeply | To a profound degree; intensely. | She is deeply committed to helping animals. | completely, acutely, genuinely | slightly | Adverb |
| somewhere | In or at a place. | I was somewhere deep in the forest when I heard a growling noise. | around, elsewhere, someplace | nowhere | Adverb |
| appointed | Chosen for a job. | We appointed her as the official navigator of the road trip. | selected, chosen, delegated | Adjective | |
| lethal | Relating to or capable of causing death. | Never handle a venomous snake; its bite could be lethal. | deadly, destructive, fatal | harmless | Adjective |
| pollution | A substance or thing that is harmful or poisonous to the environment. | Air pollution from wildfires has made the sunsets red and hazy all week. | contamination, adulteration, dirtiness | Noun | |
| ziggurat | An ancient Mesopotamian temple tower in the shape of a stepped pyramid. | Archeologists discovered the remains of a ziggurat while excavating a site in Iraq. | Noun |
Take a look at other vocabulary lists for Fifth Grade.
Fifth Grade Vocabulary Lists