sound - the sudden occurrence of an audible event; "the sound awakened them"

schwa, shwa - a neutral middle vowel; occurs in unstressed syllables

symptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease

systolic murmur - a murmur heard during systole

complaint - an expression of grievance or resentment

coo - speak softly or lovingly; "The mother who held her baby was cooing softly"

mouth, speak, talk, verbalise, verbalize, utter - express in speech; "She talks a lot of nonsense"; "This depressed patient does not verbalize"

susurrate - issue soft noises

kvetch, plain, quetch, complain, sound off, kick - express complaints, discontent, displeasure, or unhappiness; "My mother complains all day"; "She has a lot to kick about"