This is the 3026th most frequent Russian word.
задуматься
"Задуматься" means "to ponder" or "to become lost in thought."
The word 'задумался' here means 'started to think deeply', reflecting a personal introspection.
Я задумался о смысле жизни.
I started questioning the meaning of life.
In this instance, 'задумалась' conveys the act of considering or pondering a concept or idea.
Она задумалась над предложением.
She pondered the suggestion.
Here, 'задумались' means 'considered deeply', implying collaboration and focus.