What does the cryptic crossword clue "Some cocksure talk retracted in future (5)" mean?

The definition is "Some". The wordplay uses a hidden word. Hidden reversed in "some cocksuRE TALk retracted in future" The answer is LATER.

Some cocksure talk retracted in future (5)

Independent Cryptic #12070 | 14 Across | 2025-06-16 flower