off-the-cuff vs offhand

off-the-cuff and offhand both are adjectives.

Word	Noun	Adjective	Verb	Adverb
off-the-cuff	No	Yes	No	No
offhand	No	Yes	No	Yes

As adjectives, off-the-cuff and offhand are synonyms defined as:

Other synonyms of off-the-cuff include ad-lib, extemporaneous, extemporary, extempore, impromptu, offhanded, unrehearsed.

off-the-cuff (adjective)	offhand (adjective)
with little or no preparation or forethought	casually thoughtless or inconsiderate
	with little or no preparation or forethought

off-the-cuff (adverb)	offhand (adverb)
	in a casually inconsiderate manner
	without previous thought or preparation