No. 333 in Japanese
完全
Complete; perfect.
In a sentence
この理論は完全に理解されているわけではありません。
This theory is not completely understood.
Here, '完全に' (completely) is used as an adverb to describe the degree to which the theory is understood.
彼は完全な結果を目指して努力している。
He is striving towards achieving perfect results.
'完全な' (perfect) functions as an adjective modifying '結果' (results) to indicate a state of flawlessness or completion.
安全性を完全に確保することが求められている。
It is required to ensure safety completely.
In this sentence, '完全に' is employed as an adverb emphasizing the thoroughness of the action '確保する' (to ensure).
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