derisory vs idiotic

derisory and idiotic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
derisory	No	Yes	No	No
idiotic	No	Yes	No	No

As adjectives, derisory and idiotic are synonyms defined as:

Other synonyms of derisory include absurd, cockeyed, laughable, ludicrous, nonsensical, preposterous, ridiculous.

derisory (adjective)	idiotic (adjective)
so unreasonable as to invite derision	so unreasonable as to invite derision
	insanely irresponsible
	having a mental age of three to seven years