fai3 zeon6 sam1 gei1費盡心機费尽心机

Jyutpingfai3 zeon6 sam1 gei1
Yalefai jeuhn sām gēi

Definition

To rack one's brains; to exhaust all options or plot schemes.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector