In`de*co"rous [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.
© Webster 1913.