Weas or Weasel is a term used to describe a sneaky or untrustworthy person. There are many synonyms that can be used in place of weas, including rat, sneak, snitch, backstabber, betrayer, traitor, and deceiver. Other synonyms that are commonly used include informer, stool pigeon, tattletale, and turncoat. Each of these words has subtle differences in meaning, but they all convey the same general idea of someone who is untrustworthy or disloyal. It's important to choose the right synonym depending on the context of your sentence or conversation. Whatever word you choose, remember that weasels are not typically considered trustworthy, dependable, or honest.