[ 'dɛk(ə)rəs ]
■ adjective in keeping with good taste and propriety; polite and restrained.
Derivatives
~ly adverb
~ness noun
Origin
C17: from L. decorus 'seemly' + -ous .
DECOROUS
Meaning of DECOROUS in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004