What does the cryptic crossword clue "Studio exposed by ultimate lie, regrettably (7)" mean?

The definition is "Studio". The wordplay uses a hidden word. Hidden in "studio exposed by ultimATE LIE, Regrettably" The answer is ATELIER.

Studio exposed by ultimate lie, regrettably (7)

Guardian Cryptic #29185 | 21 Down | 2023-09-26 flower