sincegiven
The term "sincegiven" is not a recognized word in standard English dictionaries and appears to be a neologism or a typographical error. It is possible that "sincegiven" is a portmanteau, a blend of two or more words. For instance, it could potentially be a combination of "since" and "given," implying a period of time or a state that has been established or granted. Alternatively, it might be a misspelling of a similar-sounding word or phrase.
Without further context or a clearer definition, it is difficult to ascertain the precise meaning or origin