INNOCUOUS Meaning of INNOCUOUS in English [ ɪ'nɒkjʊəs ]■ adjective not harmful or offensive.Derivatives~ly adverb~ness noun OriginC16: from L. innocuus , from in- 'not' + nocuus (see nocuous ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004