Rats: meaning, definitions and examples

Use 'rats' to refer to larger rodents that generally evoke a negative reaction, often found in urban environments or dirty places, sometimes associated with disease. It's commonly used to describe a problem in an area or to insult someone.

• The old warehouse was infested with rats
• He betrayed his friends, acting like a rat

Use 'rodents' when referring to the general family of small mammals that include rats, mice, squirrels, etc. This term is neutral and often used in scientific or ecological contexts.

• Rodents are known for their sharp incisors that grow continuously
• The park is home to various rodents

Use 'mice' to refer to smaller rodents, often viewed as less threatening or even cute, commonly found in homes or countryside areas. They are also used in scientific research.

• We have a couple of mice living in the attic
• The scientist used mice in the lab for experiments

Use 'vermin' to describe small animals or insects that are perceived as pests. This term has a strong negative connotation and is used to express disdain or annoyance.

• The barn was infested with vermin
• He thinks of the criminals as nothing more than vermin