suitably vs duly

suitably and duly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
suitably	No	No	No	Yes
duly	No	No	No	Yes

As adverbs, suitably and duly are synonyms defined as:

suitably and duly: in accordance with what is appropriate or suitable for the circumstances

Other synonyms of suitably include appropriately, befittingly, fitly, fittingly, properly.

suitably (adverb)	duly (adverb)
in accordance with what is appropriate or suitable for the circumstances	in accordance with what is appropriate or suitable for the circumstances