This is the 696th most frequent Ukrainian word.
успішно
Successfully.
In this sentence, 'успішно' is an adverb modifying the verb 'склав', indicating the success of the action performed.
Він успішно склав екзамен.
He successfully passed the exam.
Here, 'успішно' modifies the verb 'завершила' to show that the action of completing the project was done in a successful manner.
Компанія успішно завершила проект.
The company successfully completed the project.
In this sentence, 'успішно' is used to describe the verb 'вирішив', emphasizing the effective accomplishment of the task.