non-U

[non-yoo] /nɒnˈyu/
adjective
1.
not characteristic of or appropriate to the upper class, especially of Great Britain:
certain words and phrases that are considered absolutely non-U.
Origin
non- + U (adj.)
British Dictionary definitions for non-U

non-U

/nɒnˈjuː/
adjective (Brit, informal)
1.
(esp of language) not characteristic of or used by the upper class Compare U1
Related Abbreviations for non-U

non-U

non upper class