There are several synonyms that can be used for the word "nonofficial". Some of these synonyms include unofficial, unlicensed, uncertified, and informal. The term "unofficial" implies that something is not authorized or recognized by an official source, while the term "unlicensed" suggests that something is not legally approved or regulated. "Uncertified" implies that something lacks the necessary credentials or qualifications. Finally, "informal" suggests a casual or non-structured setting. These synonyms can help to convey a sense of deviation from normative or institutional processes, laws, or expectations, and can be useful in a variety of contexts where a formal or official designation is not needed or desired.