假模假樣 [－－－样]

Jyutping gaa2 mou4 gaa2 joeng6
Pinyin jiǎ mó jiǎ yàng

Definitions (Wiktionary)
  1. phrase, idiomatic
    to behave in an affected way; to put on an act
    (syn.) 装模作样, 裝模作樣