The most common and most likely answer to this crossword clue is the 6 letter word SODDEN
I've seen this crossword clue in Financial Times
S
O
D
D
E
N
More clues leading to the result SODDEN
- Waterlogged lair beneath turf
- Earth doubly wet
- Beneath turf, burrow wet
- Very wet turf where animal lives
- Waterlogged turf needs study
- Waterlogged piece of earth next to cave
- Thus drain leaking water gets lair very wet
- Muddy grass bordering nest
- Study on section of turf that’s heavy with moisture
- Wet turf covers hole
Buddy explains!

The straight part
We know that "Waterlogged" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case waterlogged = sodden.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SODDEN mean?
SODDEN verb- To drench, soak or saturate.
- To become soaked.
- Soaked or drenched with liquid; soggy, saturated.
- Boiled.
- Drunk; stupid as a result of drunkenness.
- Dull, expressionless (of a person’s appearance)