Rat on and Sell out

Rat on verb - To give information (as to the authorities) about another's improper or unlawful activities.

Sell out and rat on are semantically related. in inform against topic. In some cases you can use "Sell out" instead a verb "Rat on".

Sell out verb - Get rid of all one's merchandise.

Rat on and sell out are semantically related. Sometimes you can use "Rat on" instead a verb "Sell out".