[ non-wurd ]
/ nɒnˈwɜrd /
a word that is not recognized or accepted as legitimate, as one produced by a spelling or typographical error.
a word whose meaning or use is not approved in a given circumstance: “Failure” is a nonword in her vocabulary.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019