This is the 9494th most frequent Japanese word.
精いっぱい
"To the best of one's ability; with all one's might."
In this sentence, '精いっぱい' is used to mean 'to the best of one's ability' or 'with maximum effort', emphasizing the speaker's dedication and effort during the exam.
試験では精いっぱい努力しました。
I did my utmost in the exam.
Here, '精いっぱい' demonstrates the intensity of the effort put into pushing, referring to exerting one's utmost physical strength.
彼は精いっぱい力を込めて押しました。
He pushed with all his strength.
This usage of '精いっぱい' conveys the idea of doing one's best in presenting a warm, welcoming smile, emphasizing sincerity and wholeheartedness.