"unburdened" in the verb sense
1. unburden
free or relieve (someone) of a burden
2. unburden, disburden
take the burden off remove the burden from
"unburden the donkey"
"unburdened" in the adjective sense
1. unburdened
not burdened with difficulties or responsibilities
"unburdened by an overarching theory"- Alex Inkeles
2. burdenless, unburdened
not encumbered with a physical burden or load
Source: WordNet® (An amazing lexical database of English)
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