rat
/ræt/
verb
- To inform on or betray someone (informal).
- The thief ratted to the police about where the stolen goods were hidden.
- She would never rat out her teammates, even under pressure.
- He ratted on his friends to avoid getting in trouble himself.
noun
- A medium-sized rodent with a long tail, often found in cities and known for gnawing and spreading disease.
- The scientist used a lab rat to test the new medicine.
- A rat scurried across the kitchen floor and hid behind the refrigerator.
- Rats can squeeze through very small holes to get into buildings.
- A person who is disloyal, untrustworthy, or informs on others (informal).
- Don't trust him — he's a rat who will betray you for his own gain.
- The gang members suspected there was a rat in their group leaking information to the police.
- He was called a rat after he told the teacher about the prank.