しゃかりきに

adverb

frantically; furiously; with all one's might

Describes doing something with intense, almost desperate energy; often used for physical effort or single-minded focus.

See also: しゃかりき

• 彼かれはしゃかりきに走はしって、終しゅう電でんに間まに合あった。

  He ran like mad and caught the last train.

• 試し験けん前ぜん日じつ、しゃかりきに勉べん強きょうした。

  The day before the exam, I studied furiously.