I think this adjective (形容词 ) only exists in Cantonese? Google didn't return official dictionary website. 粤语里的“作状、单打”是什么意思?_百度知道
作状就是装b,丑人多作怪的意思;单单打打就是说话难听,尖酸刻薄,指桑骂槐,含沙射影
I stumbled this 形容词 in comment under 【廣東話】獲頒友誼小姐唔得閒慶祝 鄺美璇:覆咗成晚MSG - YouTube
I think this means
On the contrary, this feels very 作狀. Especially final sound; last or end syllable.