What does 力いっぱい mean?
力いっぱい is a Japanese adverb meaning “with all one's strength” in English. It is written as 力いっぱい in kanji, ちからいっぱい in hiragana, and chikaraippai in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
彼は力いっぱい引っ張ったが、岩はびくともしなかった。
He pulled with all his strength, but the rock would not move.