blate vs let out

blate is an adjective but let out is not an adjective.

Word	Noun	Adjective	Verb	Adverb
blate	No	Yes	Yes	No
let out	No	No	Yes	No

As verbs, let out is a hypernym of blate; that is, let out is a word with a broader meaning than blate:

Other hypernyms of blate include emit, let loose, utter.

blate (adjective)	let out (adjective)
disposed to avoid notice

blate (verb)	let out (verb)
cry plaintively	make (clothes) larger
	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
	express audibly; utter sounds (not necessarily words)
	bring out of a specific state