Sound Crossword Clue — 5 Letters
One confident answer with explanation of the wordplay
VALID
PossibleV
A
L
I
D
"Sound" can mean valid or logical (e.g., "a sound argument"), making VALID a strong synonym. Other meanings of "sound" include a body of water (INLET, FIRTH) or noise (NOISE), but VALID fits cleanly as a 5-letter synonym for the adjective sense of "sound."
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