let out vs widen

let out and widen both are verbs.

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

As verbs, let out and widen are synonyms defined as:

let out (verb)	widen (verb)
make (clothes) larger	become broader or wider or more extensive
make known to the public information that was previously known only to a few people or that was meant to be kept a secret	extend in scope or range or area
express audibly; utter sounds (not necessarily words)	make wider
bring out of a specific state	make (clothes) larger