Synonyms of the word

sonic

• adj. of or relating to sound.
• adj. having a speed approaching that of the speed of sound in air.

audible

• adj. Able to be heard.
• v. (intransitive, American football) To change the play at the line of scrimmage by yelling out a new one.
• n. (American football) The act of or an instance of changing the play at the line of scrimmage by yelling…

hearable

• adj. That can be heard; audible.

transonic

• adj. just below, or just above the speed of sound (0.8 < Ma < 1.2 approximately).
• adj. passing from subsonic to supersonic, or vice versa.