indecorous vs untoward

indecorous and untoward both are adjectives.

Word	Noun	Adjective	Verb	Adverb
indecorous	No	Yes	No	No
untoward	No	Yes	No	No

As adjectives, indecorous and untoward are synonyms defined as:

indecorous and untoward: not in keeping with accepted standards of what is right or proper in polite society

Other synonyms of indecorous include indecent, unbecoming, uncomely, unseemly.

indecorous (adjective)	untoward (adjective)
lacking propriety and good taste in manners and conduct	not in keeping with accepted standards of what is right or proper in polite society
not in keeping with accepted standards of what is right or proper in polite society	contrary to your interests or welfare