枉wong2費fai3

English

1. to waste (one's breath, one's energy etc)
2. to try in vain
3. to try in vain; to make vain effortsunreviewed?

粵語 — Cantonese

1. 白白浪費（時間、精力、心機）unreviewed?

Examples

• unreviewed?

  枉費我一片苦心

  all my efforts were wasted/in vain

• unreviewed?

  居然得一個人嚟呢個活動，實在係枉費大家籌備嘅心血。

  We did not expect that only one participant came to the activity. We all made vain efforts in preparation.