(verb) to pretend; to feign; to fake; (adjective) pretentious; contrived
Definitions (粵典–words.hk)
動詞
講嘢、做嘢嘅時候扮晒嘢，懶係斯文、有型、有深度等等，等自己可以俾一個好啲嘅印象人 to make pretence; to be ostentatious in speech or behaviour
佢作狀㗎咋，佢平時冇咁斯文㗎！
佢作状㗎咋，佢平时冇咁斯文㗎！
She's just pretending to be cultured and polite. She's nothing like that in daily life.
動詞
做某啲動作嘅時候太過扮嘢，搞到望落好誇張、好唔自然 to be affected or overdone (in performances)
佢影親相都好作狀㗎！
佢影亲相都好作状㗎！
Every time he takes a picture, he is/looks affected/not natural.
Definitions (Wiktionary)
verb, Cantonese
to be pretentious; to be ostentatious
verb, Cantonese
to act unnaturally; to be affected; to overdo in one's performance
呢套剧集嘅男主角啲戏唔系几掂，我觉得佢太作状。
呢套剧集嘅男主角啲戏唔系几掂，我觉得佢太作状。
ne1 tou3 kek6 zaap6 ge3 naam4 zyu2 gok3 di1 hei3 m4 hai6 gei2 dim6, ngo5 gaau3 dak1 keoi5 taai3 zok3 zong6. The performance of this drama's male lead isn't that great. I think he acts too unnaturally.
Definitions (Kaifangcidian)
裝模作樣 – 装模作样
裝腔作勢 – 装腔作势
Examples (粵典–words.hk)
Cantonese
佢作状㗎咋，佢平时冇咁斯文㗎！
佢作狀㗎咋，佢平時冇咁斯文㗎！
She's just pretending to be cultured and polite. She's nothing like that in daily life.
Cantonese
佢影亲相都好作状㗎！
佢影親相都好作狀㗎！
Every time he takes a picture, he is/looks affected/not natural.