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опустилась

came down, fell, descended, stooped to

ɐ p ʊ sʲ tʲ i ɫ ə sʲ → опуститься
о forms adverbs from adjectives + пуст let in, allow to enter + и forms verbs, often meaning “make or become X” + ла Feminine singular past tense + сь Reflexive marker
verb · singular feminine, past tense Rare #46,067
came down, fell, descended Used for a feminine subject in the past tense.
RU: Температура опустилась ниже нуля.
EN: The temperature fell below zero.
stooped to Figurative; often suggests disapproval.
RU: Она опустилась до лжи.
EN: She stooped to lying.

Я медленно опустилась в кресло; они последовали моему примеру.

I slowly sank into the armchair, and they followed suit.

Sounds similar to

спустилась s p ʊ sʲ tʲ i ɫ ə sʲ