What does the cryptic crossword clue "Told off sleeping judge? (7)" mean?

The wordplay uses a container (one word inside another). RATE (synonym="to judge") in BED (synonym="i.e. asleep") = BERATED The answer is BERATED.

Told off sleeping judge? (7)

Guardian Cryptic #29254 | 4 Down | 2023-12-15 flower