"Weet-weet" is a term commonly used to describe chirping or tweeting sounds made by various birds. However, there are plenty of other synonyms that can be used to describe similar sounds. For example, "chirp," "twitter," "trill," "warble," "cheep," and "peep" are all commonly used to describe bird sounds. Other similar sound descriptors include "chime," "jingle," "ding," "clang," and "clangor." Additionally, some animals make sounds that could be described as "weet-weet" such as guinea pigs or hamsters, in which case "squeak," "chatter," or "gnaw" could be alternative descriptors.