insistent vs clamant

insistent and clamant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
insistent	No	Yes	No	No
clamant	No	Yes	No	No

As adjectives, insistent and clamant are synonyms defined as:

Other synonyms of insistent include crying, exigent, instant.

insistent (adjective)	clamant (adjective)
repetitive and persistent	demanding attention
demanding attention	conspicuously and offensively loud; given to vehement outcry