The most common and most likely answer to this crossword clue is the 7 letter word SOUNDER
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result SOUNDER
Buddy explains!
The straight part
We know that "Depth measuring device/in better condition" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case depth measuring device/in better condition = sounder.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 SOUNDER mean?
SOUNDER adjective- Healthy.
- Complete, solid, or secure.
- Having the property of soundness.
- Good; acceptable; decent.
- (of sleep) Quiet and deep. Sound asleep means sleeping peacefully, often deeply.
- Heavy; laid on with force.
- Founded in law; legal; valid; not defective.
- Something, or someone who makes a sound.
- An instrument used in telegraphy in place of a register, the communications being read by sound.
- A stethoscope.
- A device for making soundings at sea.
- A person who takes soundings.
- A fishfinder.
- A group of wild boar.
- A young boar.