indecorous
In`de*co"rous, a. Etym: [L. indecorous. See In- not, and Decorous.] Defn: 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.