haau6

Jyutpinghaau6
Yalehaauh
語素Common

Definition

Effect, efficacy, or positive result; to imitate or follow.

  1. effect; efficacy; positive result
  2. literaryto imitate; to follow
neutraldescriptions

How it's used

Functions primarily as a bound morpheme in Cantonese rather than a standalone verb or noun. It appears most frequently in compound words like 有效 or 無效 to describe whether an action or item achieves its intended purpose. When speakers want to express that something works well, they often prefer using the adjective 有用 instead of a construction involving 效.

Examples

This medicine doesn't seem to have much effect.

Common phrases

invalid or ineffective
to take effect

Common mistake

Learners often try to use it as a standalone verb meaning to work or to be effective, but it must be combined with other characters to form a complete word. Always pair it with 有 or 冇 to convey the presence or absence of an effect.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector