Definitions for unburdenʌnˈbɜr dn
Random House Webster's College Dictionary
to free from a burden.
to relieve (one's mind, conscience, etc.) by confessing something.
to cast off or get rid of, as a burden; disclose.
Origin of unburden:
free or relieve (someone) of a burden
take the burden off; remove the burden from
"unburden the donkey"
To free from burden, or relieve from trouble.
to relieve from a burden
to throw off, as a burden; to unload