An alternate name for pet rat. Used to deflect the stereotype that rats are gross and dirty pets.

An affectionate term for a rat, most usually domesticated. It has no relation to the general use of the word 'ratty' which describes a disheveled appearance.

to look worn out, torn or dirty.

short for ratchet, used when someone is on a shooting streak in basketball

Feeling miserable, snappy and irritable, mainly a condition suffered by girls on a Sunday evening.

The term used to describe the hairstyle in which an elongated segment of hair which is more often than not awfully greasy and encased in dirt and stale urine, hangs from the back of the head, starting from below the ears. A 'ratty', or rat's tail, is traditionally never longer than the shoulders, yet it is not uncommon to see longer specimens. This style is appropriated in Australian fashion among bogans, ethnics, and lads. While common, ratties are not considered appropriate workplace fashion, hence their residing on the heads of less work-inclined individuals.

Ratty is a synonym for slutty and dirty girls. Ratty is a good name for neighborhood sluts. The world is full of ratty hoes.