Four-flush and Rat on

Rat on and four-flush are semantically related in betray topic. In some cases you can use "Rat on" instead a verb phrase "Four-flush".

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

Four-flush and rat on are semantically related in betray topic. Sometimes you can use "Four-flush" instead a verb "Rat on".