off-the-wall vs flaky

off-the-wall and flaky both are adjectives.

Word	Noun	Adjective	Verb	Adverb
off-the-wall	No	Yes	No	No
flaky	No	Yes	No	No

As adjectives, off-the-wall and flaky are synonyms defined as:

off-the-wall and flaky: conspicuously or grossly unconventional or unusual

Other synonyms of off-the-wall include bizarre, eccentric, flakey, freakish, freaky, gonzo, outlandish, outre.

off-the-wall (adjective)	flaky (adjective)
conspicuously or grossly unconventional or unusual	made of or resembling flakes
	made of or easily forming flakes
	conspicuously or grossly unconventional or unusual