In`de*co"rous (?; 277), a. [L.
indecorous. See In- not, and Decorous.] Not
decorous; violating good manners; contrary to good breeding or
etiquette; unbecoming; improper; out of place; as, indecorous
conduct.
It was useless and indecorous to attempt
anything more by mere struggle.
Burke.
Syn. -- Unbecoming; unseemly; unbefitting; rude; coarse;
impolite; uncivil; ill-bred.