This is the 7626th most frequent Russian word.
естественно
Naturally.
In this sentence, 'естественно' is used as an adverb meaning 'naturally', indicating that the agreement was expected or logical.
Естественно, он согласился с её предложением.
Naturally, he agreed with her proposal.
Here, 'естественно' describes the manner of speaking, meaning 'in a natural way', emphasizing an authentic and spontaneous quality.
Она говорит так естественно, что все ей верят.
She speaks so naturally that everyone believes her.
In this context, 'естественно' refers to feeling relaxed and normal, focusing on a state of ease and authenticity.