Definitions

1. adjective

most sulky or sullen; having or showing a sulky or sullen attitude or expression.

“She looked sulkiest when her friends tried to persuade her to go out on a Saturday night.”

2. superlative

most sulky or sullen; most sulky or sullenly disposed.

“He is the sulkiest person I’ve ever met; he’s always complaining about something.”

3. comparative

more sulky or sullen; more sulky or sullenly disposed.

“After not getting what he wanted, he became sulkiest and refused to talk to anyone.”