decidedly vs by all odds

decidedly and by all odds both are adverbs.

Word	Noun	Adjective	Verb	Adverb
decidedly	No	No	No	Yes
by all odds	No	No	No	Yes

As adverbs, decidedly and by all odds are synonyms defined as:

Other synonyms of decidedly include definitely, emphatically, in spades, unquestionably.

decidedly (adverb)	by all odds (adverb)
without question and beyond doubt	without question and beyond doubt