What does the cryptic crossword clue "Send back coat over silent treatment to manage alone (3,6)" mean?

The wordplay uses an anagram. anagram of FUR (synonym="coat") + SILENT (synonym="SILENT") = RUNITSELF The answer is RUNITSELF.

Send back coat over silent treatment to manage alone (3,6)

Guardian Cryptic #29370 | 6 Down | 2024-04-30 flower