Squelch (verb)

1. Suppress or extinguish something suddenly and completely.
2. Silence or suppress someone or something firmly and decisively.
3. Extinguish or suppress something abruptly and completely.

Origin:

From the word "squelch" which means a sound of a liquid being pressed out, it refers to suppress or extinguish something suddenly and completely, it can also be used as a noun for the sound made by the suppression or extinguishing.

Examples:

1. He squelched the fire by pouring water on it.
2. The police squelched the protest by using force.
3. The teacher squelched the students' complaints.
4. The noise of the squelch on the walkie-talkie indicated that the transmission had been cut off.
5. He squelched the rumor by denying it publicly.