audio-, aud-, audi-, audit- +

(Latin: hearing, listening, perception of sounds)

inaudible (adjective) (not comparable)
Regarding something which is not loud enough to be heard; unhearable; soundless: Jane wondered if her mother needed a hearing aid because the sound of the crickets outside were inaudible for her.
inaudibleness (s) (noun) (no pl)
The condition of not being perceptible by the ear,; incapable of being heard. The sound of Jim's voice alarmed her, from being very high-pitched to inaudibleness.
inaudibly (adverb) (not comparable)
Description of how something is impossible to be heard, or not loud enough to be heard: Carol's cat darted inaudibly from the living room to the kitchen.
obedience (s) (noun), obediences (pl)
1. The act or practice of following instructions, complying with rules or regulations, or submitting to someone's authority: Dogs can be taught obedience, but cats cannot be taught this because they certainly do what they want and whenever they want!
2. The religious authority exercised by a church, a priest, or another member of the clergy, or the people who are under this authority: Obedience requires conformity to a monastic rule or the authority of a religious superior, especially on the part of the one who has vowed such conformance.
obedient (adjective), more obedient, most obedient
Concerning a person or an animal that does, or is willing to do, what someone else wants: When Daisy was a little girl, she was very obedient and always did what her mother wanted her to do.
obediently (adverb), more obediently, most obediently
Pertaining to how commands or instructions are complied with by those in authority; yieldingly: When Ruth was sick, she drank her medicine obediently and without complaining.
obeisance (s) (noun), obeisances (pl)
1. A bending down of the body, especially by bowing, expressing deep respect or deferential courtesy: In the fairy tale Anita was reading, the pauper showed her obeisance to the prince by curtsying and speaking carefully.
2. An attitude or behavior of someone who pays respect or homage to somebody or something: After entering the church, Agatha showed her obeisance and reference to Him by bowing and bending her knees.
obey (verb), obeys; obeyed; obeying
1. To follow instructions or behavior in accordance with a law, a rule, or an order: In school the children have to obey not only the teacher but also the principal.
2. To submit or to conform in action to (some guiding principle, impulse, one's conscience, etc.): Jill had a good sense of justice and always obeyed her conscience of fairness and integrity.
3. Etymology: from Old French obeir, from Latin oboedire, "obey, pay attention to, to give ear to"; literally, "listen to"; from ob-, "to" + audire, "to listen, to hear".
postauditory (adjective) (not comparable)
Referring to the rear position of the auditory nerve: The postauditory chamber is posterior to the external auditory meatus (opening or passageway).
preaudience (s) (noun), preaudiences (pl)
In law, the right to be heard before another, a privilege belonging to the English legal system, the members of which are entitled to be heard in their order, according to rank, beginning with the Attorney and Solicitor General, and Queen's Counsel, and ending with barristers at large: In the courtroom, the lawyer for the defence called for a preaudience in order to speak first before the judge.

psychauditory, psychoauditory (adjective), more psychauditory, most psychauitory; more psychoauditory, most psychoauditory
Relating to the perception and interpretation of sounds: Psychauditory awareness, clarification, and elucidation of noises, sound, tones, and words are all important for a person's understanding of his environment.

Psychauditory conscious analysis is one of the attributes and qualities regarding the sounds heard by an individual.

screening audiometry (s) (noun), screening audiometries (pl)
A rapid measurement of the hearing of an individual or a group against a predetermined limit of normality: During a screening audiometry auditory responses to different frequencies at a constant intensity level are tested.
subaudible (adjective) (not comparable)
Referring to sounds scarcely perceptible to the ear or of being heard: Subaudible noises or sounds are either below the threshold of hearing or are barely hearable, like little waves splashing against the sand at a beach.
subaudition (s) (noun), subauditions (pl)
The act of understanding a word or thought that is implied but not actually expressed in speech or writing: By way of subaudition, a word, idea, or thought can be understood by a hearer or reader although it is not specifically expressed, but only insinuated.
superaudible (adjective) (not comparable)
Above and beyond the normal perception of hearing: A superaudible frequency is one that is higher than the threshold of a person's ability to hear.

Related "hear, hearing; listen, listening" units: acous-; ausculto-.