inopportune vs unfavourable

inopportune and unfavourable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
inopportune	No	Yes	No	No
unfavourable	No	Yes	No	No

inopportune (adjective)	unfavourable (adjective)
not opportune	(of winds or weather) tending to hinder or oppose
	not encouraging or approving or pleasing
	involving or creating circumstances detrimental to success or effectiveness