unwholesome
Concise Oxford English Dictionary © 2008 Oxford University Press:
unwholesome/ʌnˈhəʊlsəm/
▶adjective not wholesome.
– derivatives
unwholesomely adverb,
unwholesomeness noun.
unwholesomely adverb,
unwholesomeness noun.
'unwholesome' also found in these Oxford entries:

