unstylish vs unfashionable

unstylish and unfashionable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unstylish	No	Yes	No	No
unfashionable	No	Yes	No	No

As adjectives, unstylish and unfashionable are synonyms defined as:

unstylish and unfashionable: not in accord with or not following current fashion

unstylish (adjective)	unfashionable (adjective)
lacking in style or elegance	not in accord with or not following current fashion
not in accord with or not following current fashion	unpopular and considered unappealing or unfashionable at the time