1.Definition: contrary to your interests or welfare

"Made a place for themselves under the most untoward conditions"

Related Adjective(s):adverse, inauspicious

2.Definition: not in keeping with accepted standards of what is right or proper in polite society

"Moved to curb their untoward ribaldry"

Related Adjective(s):indecent, indecorous, unbecoming, uncomely, unseemly