There are many synonyms for the phrase "sound one's horn". Some of the synonyms include honk, beep, toot, blast, hoot, and whistle. Each of these words means the same thing and is used as a way of making a noise when driving or to alert other drivers of your presence. The most common use of sounding one's horn is to warn other drivers of your presence, but it can also be used to indicate annoyance or frustration. No matter the reason, the important thing to remember is to use the horn responsibly and only when necessary.
