assert vs assertable

assert is not an adjective while assertable is an adjective.

Word	Noun	Adjective	Verb	Adverb
assert	No	No	Yes	No
assertable	No	Yes	No	No

assert (adjective)	assertable (adjective)
	capable of being affirmed or asserted

assert (verb)	assertable (verb)
postulate positively and assertively
to declare or affirm solemnly and formally as true
state categorically
insist on having one's opinions and rights recognized