What does the cryptic crossword clue "Doubtful moment leaving front (4)" mean?

The definition is "Doubtful". The wordplay uses a deletion. JIFFY (synonym="moment") with deletion = IFFY; definition: "Doubtful" The answer is IFFY.

Doubtful moment leaving front (4)

Daily Mail Cryptic #17852 | 17 Down | 2026-04-08 flower