What does the cryptic crossword clue "Spot of glorious mud? Genuinely (6)" mean?

The definition is "Spot". The wordplay uses a hidden word. Hidden in "spot of gloriouS MUD? GEnuinely" The answer is SMUDGE.

Spot of glorious mud? Genuinely (6)

Guardian Cryptic #29090 | 1 Down | 2023-06-07 flower