What is a good idiom for sound?

Question

What is a good idiom for the word "sound"?

i meant sound as in water rushing

Answer 1

Safe and sound
If you arrive safe and sound, then nothing has harmed you on your way.

Sound as a bell
If something or someone is as sound as a bell, they are very healthy or in very good condition.

Answer 2

thanks i had to use the dictionary to answer this ?, now i know something else
Main Entry: id·i·om
Pronunciation: 'i-dE-&m
Function: noun
Etymology: Middle French & Late Latin; Middle French idiome, from Late Latin idioma individual peculiarity of language, from Greek idiOmat-, idiOma, from idiousthai to appropriate, from idios
1 a : the language peculiar to a people or to a district, community, or class : DIALECT b : the syntactical, grammatical, or structural form peculiar to a language
2 : an expression in the usage of a language that is peculiar to itself either grammatically (as no, it wasn't me) or in having a meaning that cannot be derived from the conjoined meanings of its elements (as Monday week for "the Monday a week after next Monday")
3 : a style or form of artistic expression that is characteristic of an individual, a period or movement, or a medium or instrument ; broadly : MANNER, STYLE
now as to your answer,---no idea, you're on your own.
ha