What does the cryptic crossword clue "Disguise in act as prank (5)" mean?

The definition is "prank". The wordplay uses an anagram. anagram of IN + ACT = ANTIC; definition: "prank" The answer is ANTIC.

Disguise in act as prank (5)

Daily Mail Cryptic #17425 | 13 Across | 2024-08-16 flower