"sulks" in the noun sense
1. sulk, sulkiness
a mood or display of sullen aloofness or withdrawal
"stayed home in a sulk"
"sulks" in the verb sense
1. sulk, pout, brood
be in a huff and display one's displeasure
"She is pouting because she didn't get what she wanted"
Source: WordNet® (An amazing lexical database of English)
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