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sound
adjective
°Healthy.
"He was safe and sound."
°Complete, solid, or secure.
"Fred assured me the floorboards were sound."
noun
°A sensation perceived by the ear caused by the vibration of air or some other medium. (He turned when he heard the sound of footsteps behind him.).
"Nobody made a sound."
°A vibration capable of causing this.
verb
°To produce a sound.
"When the horn sounds, be careful."
°To convey an impression by one's sound.
"He sounded good when we last spoke."
synonyms: echo, reecho, resonate