Answer:

sound

AnswerCrossword Clue
SOUNDIn good shape
SOUNDLike a good proof
SOUNDSolid
SOUNDNow hear this!
SOUNDHealthy
SOUNDReliable
SOUNDSolid as a rock
SOUNDNot going bankrupt
SOUNDValid
SOUNDPing or pong
SOUNDBoating locale
SOUNDLevelheaded
SOUNDUnflawed
SOUNDIn good condition
SOUNDIn good health
SOUNDAudio