What does the cryptic crossword clue "Desperate now SOS grows faint (6)" mean?

The definition is "grows faint". The wordplay uses an anagram. anagram of NOW + SOS = SWOONS; definition: "grows faint" The answer is SWOONS.

Desperate now SOS grows faint (6)

Independent Cryptic #12035 | 1 Down | 2025-05-06 flower