noun
a person who is habitually grumpy or negative
verb
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adjective
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adverb
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pronoun
None
preposition
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conjunction
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interjection
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article
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The grouch in the office always complains about everything.
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My grandpa can be a real grouch when he doesn't get his afternoon nap.
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Don't be such a grouch, lighten up and have some fun!
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His constant negativity turned him into a real grouch.