nonlexical
An adjective describing when something written or spoken, including sounds and utterances, cannot be located in the conventional dictionary or lexicon because it’s not considered a traditional or widely-accepted word.
Although the existence and use of nonlexical words is the currency of Urban Dictionary and its devotees, non-lexical words and phrases are considered by word snobs to be grounds for shame and dishonor.
nonlexical by Dr Bunnygirl May 25, 2023
Words you can keep
