If you describe someone or something as un-American, you think that they are not in accordance with American ideals and customs.
[disapproval]
He used the same cinematographer, Owen Roizman, to create a dark, intense atmospherewhich was very un-American at the time.
2. adjective
Un-American activities are political activities that are considered to be against the interests of the U.S.
They were called before the House Un-American Activities Committee and blacklisted.
un-American in British English
adjective
1.
not in accordance with the aims, ideals, customs, etc, of the US
2.
against the interests of the US
Derived forms
un-Americanism (ˌun-Aˈmericanˌism)
noun
un-American in American English
(ˌʌnəˈmɛrɪkən)
adjective
not American; regarded as not characteristically or properly American; esp., regardedas opposed or dangerous to the U.S., its institutions, its principles, etc.
Derived forms
un-Americanism (ˌun-Aˈmericanˌism)
noun
Examples of 'un-American' in a sentence
un-American
This was intolerable, this was un-American, you wanted to laugh in derision.