This is the 7807th most frequent Russian word.
исполнительный
"Executive" or "efficient."
In this sentence, "исполнительный" means "executive," referring to a position or role associated with carrying out tasks or decisions.
Исполнительный директор компании вынес важное решение.
The executive director of the company made an important decision.
Here, "исполнительный" describes a person who is diligent or responsible in their execution of tasks.
Он всегда выполняет задания точно и в срок, он очень исполнительный.
He always completes tasks accurately and on time; he is very diligent.
In this example, "исполнительный" again relates to execution or implementation, but in the context of governance.