From WordNet (r) 3.0 (2006):
sound adj 1: financially secure and safe; "sound investments"; "a sound economy" [ant: unsound] 2: 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" [syn: healthy, intelligent, levelheaded, level-headed, sound] 3: in good condition; free from defect or damage or decay; "a sound timber"; "the wall is sound"; "a sound foundation" [ant: unsound] 4: in excellent physical condition; "good teeth"; "I still have one good leg"; "a sound mind in a sound body" [syn: good, sound] 5: logically valid; "a sound argument" [syn: reasoned, sound, well-grounded] 6: having legal efficacy or force; "a sound title to the property" [syn: legal, sound, effectual] 7: free from moral defect; "a man of sound character" 8: (of sleep) deep and complete; "a heavy sleep"; "fell into a profound sleep"; "a sound sleeper"; "deep wakeless sleep" [syn: heavy, profound, sound, wakeless] 9: thorough; "a sound thrashing" n 1: the particular auditory effect produced by a given cause; "the sound of rain on the roof"; "the beautiful sound of music" [ant: quiet, silence] 2: the subjective sensation of hearing something; "he strained to hear the faint sounds" [syn: sound, auditory sensation] 3: mechanical vibrations transmitted by an elastic medium; "falling trees make a sound in the forest even when no one is there to hear them" 4: the sudden occurrence of an audible event; "the sound awakened them" 5: the audible part of a transmitted signal; "they always raise the audio for commercials" [syn: audio, sound] 6: (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language [syn: phone, speech sound, sound] 7: a narrow channel of the sea joining two larger bodies of water [syn: strait, sound] 8: a large ocean inlet or deep bay; "the main body of the sound ran parallel to the coast" v 1: appear in a certain way; "This sounds interesting" 2: make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'" [syn: sound, go] 3: give off a certain sound or sounds; "This record sounds scratchy" 4: announce by means of a sound; "sound the alarm" 5: utter with vibrating vocal chords [syn: voice, sound, vocalize, vocalise] [ant: devoice] 6: cause to sound; "sound the bell"; "sound a certain note" 7: measure the depth of (a body of water) with a sounding line [syn: fathom, sound]