desensitise vs blunt

desensitise is not an adjective while blunt is an adjective.

Word	Noun	Adjective	Verb	Adverb
desensitise	No	No	Yes	No
blunt	No	Yes	Yes	No

As verbs, blunt is a hyponym of desensitise; that is, blunt is a word with a more specific, narrower meaning than desensitise:

Other hyponyms of desensitise include benumb, dull, numb, bedaze, daze, stun, besot, stupefy, deaf, deafen.

desensitise (adjective)	blunt (adjective)
	characterized by directness in manner or speech; without subtlety or evasion
	used of a knife or other blade; not sharp
	having a broad or rounded end
	devoid of any qualifications or disguise or adornment

desensitise (verb)	blunt (verb)
make insensitive	make less sharp
cause not to be sensitive	make less intense
	make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation
	make dull or blunt
	make numb or insensitive