(noun, verb)


1. any of various long-tailed rodents similar to but larger than a mouse

Definition categories: animal, gnawer, rodent

2. someone who works (or provides workers) during a strike

Similar word(s): blackleg, scab, strikebreaker

Definition categories: person, worker

3. a person who is deemed to be despicable or contemptible

- kill the rat

Similar word(s): bum, crumb, git, lowlife, puke, rotter, skunk, stinker, stinkpot

Definition categories: person

4. one who reveals confidential information in return for money

Similar word(s): betrayer, blabber, informer, squealer

Definition categories: person, informant, source

5. a pad (usually made of hair) worn as part of a woman's coiffure

Definition categories: man–made, pad

Sentences with rat as a noun:

- What a rat, leaving us stranded here!

- Our teenager has become a mall rat.

- He loved hockey and was a devoted rink rat.

- Get your rat out.


1. desert one's party or group of friends, for example, for one's personal advantage

Definition categories: social, defect, desert

2. employ scabs or strike breakers in

Definition categories: social, employ, engage, hire

3. take the place of work of someone on strike

Similar word(s): blackleg, fink, scab

Definition categories: social, work

4. give (hair) the appearance of being fuller by using a rat

Definition categories: contact, pad

5. catch rats, especially with dogs

Definition categories: contact, capture, catch

6. give away information about somebody

Similar word(s): betray, denounce, grass, shop, snitch, stag

Definition categories: communication, inform

Sentences with rat as a verb:

- He ratted on his coworker.

- He is going to rat us out!