unbecoming vs untoward

unbecoming and untoward both are adjectives.

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

As adjectives, unbecoming and untoward are synonyms defined as:

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

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

unbecoming (adjective)	untoward (adjective)
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