Below are possible answers for the crossword clue Solid as a rock.
5 letter answer(s) to solid as a rock
SOUND
(of sleep) deep and complete; "a heavy sleep"; "fell into a profound sleep"; "a sound sleeper"; "deep wakeless sleep"
(phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language
a large ocean inlet or deep bay; "the main body of the sound ran parallel to the coast"
a narrow channel of the sea joining two larger bodies of water
announce by means of a sound; "sound the alarm"
appear in a certain way; "This sounds interesting"
cause to sound; "sound the bell"; "sound a certain note"
exercising or showing good judgment; "healthy scepticism"; "a healthy fear of rattlesnakes"; "the healthy attitude of French laws"; "healthy relations between labor and management"; "an intelligent solution"; "a sound approach to the problem"; "sound advice"; "no sound explanation for his decision"
financially secure and safe; "sound investments"; "a sound economy"
Other crossword clues with similar answers to 'Solid as a rock'