What does the cryptic crossword clue "Guard in bed, suffering complete (10)" mean?

The definition is "complete". The wordplay uses an anagram. anagram of GUARD + IN + BED, = UNABRIDGED; definition: "complete" The answer is Unabridged.

Guard in bed, suffering complete (10)

Telegraph #28476 | 13 Down | 2017-07-11 flower

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Also seen in

Independent Cryptic #11290 (2022-12-19) Times Cryptic #28088 (2021-09-21)