adverb taking the 'to' particle, adverb, noun or participle which takes 'suru'
quiet; still; silent; deserted
Describes a place or scene that is hushed, still, and often empty of people. Often used with ～とした or ～としている.
夜の神社はひっそりとしていた。
The shrine at night was quiet and still.
The deserted street is completely silent.
adverb taking the 'to' particle, adverb, noun or participle which takes 'suru'
inconspicuously; modestly; quietly
Describes a person acting in a low-key, unobtrusive manner, often to avoid attention. Common with verbs like 暮らす or 生きる.
彼は田舎でひっそりと暮らしている。
He lives quietly and modestly in the countryside.
彼女はパーティーでひっそりと隅に座っていた。
She sat inconspicuously in the corner at the party.