dismiss vs dismissible

dismiss is not an adjective while dismissible is an adjective.

Word	Noun	Adjective	Verb	Adverb
dismiss	No	No	Yes	No
dismissible	No	Yes	No	No

dismiss (adjective)	dismissible (adjective)
	subject to dismissal

dismiss (verb)	dismissible (verb)
declare void
bar from attention or consideration
end one's encounter with somebody by causing or permitting the person to leave
cease to consider; put out of judicial consideration
terminate the employment of; discharge from an office or position
stop associating with