This is the 17132nd most frequent Russian word.
становясь
"Becoming."
The word "становясь" is used in a participial construction to describe a gradual change or state in progress, specifically becoming more tired.
Он медленно шел по улице, становясь все более усталым.
He walked slowly down the street, gradually becoming more tired.
Here, "становясь" indicates a process of development or transformation as an integral part of the main action.
Мальчик рос, становясь сильнее и умнее с каждым годом.
The boy grew, becoming stronger and smarter every year.
In this sentence, "становясь" is utilized to convey a change in disposition or attitude happening alongside the understanding of feelings.