Rat

Part of speech: noun, verb

Pronunciation: /ɹæt/

Definitions

1. A frequently seen rodent that thrives in diverse habitats, typically viewed as a nuisance, may also represent a disloyal person or informer who promotes betrayal among peers
2. Known for living in close quarters with humans, this adaptable animal is often linked to uncleanliness, while the term can also signify an individual who betrays trust or reveals secrets
3. A common rodent found in various environments, often regarded as a pest, while also denoting a person who betrays trust or informs on others to gain advantage

Etymology: The rodent sense of "rat" has an etymology that scholars still argue over. Its Germanic ancestor, reconstructed as "*rattaz", may not have originally named the animal we know today, since the rat is thought to have been absent from northern Europe in antiquity. The word's earliest English attestations appear in the 12th century, in forms like "raat" and "ratte", and it has close cognates across Germanic and Romance languages, including German "Ratte", Dutch "rat", and Latin "rattus". The verb sense, "to desert or betray a group", is a separate and more recent development. The verb "ratten", which means to inform on or abandon one's associates, arose in Middle English, and its precise origin is unknown. Its later "informer" sense is often linked to the rodent's reputation for abandoning a sinking ship, though that link is a popular explanation rather than a documented one.

Synonyms: informant, snitch

Antonyms: loyalist