unfavourable vs invidious

unfavourable and invidious both are adjectives.

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

unfavourable (adjective)	invidious (adjective)
(of winds or weather) tending to hinder or oppose	containing or implying a slight or showing prejudice
not encouraging or approving or pleasing
involving or creating circumstances detrimental to success or effectiveness