This is the 14152nd most frequent Russian word.
оправдывать
"To justify" or "to excuse."
Here, 'оправдывать' means to provide explanations or reasons for mistakes in order to alleviate blame or guilt.
Он всегда пытается оправдывать свои ошибки.
He always tries to justify his mistakes.
In this sentence, 'оправдывать' refers to fulfilling or living up to expectations.
Решение не оправдывает ожидания.
The decision does not meet expectations.
Here, 'оправдывать' means to defend or explain actions based on certain reasons or conditions.