fat1

Jyutpingfat1
Yalefāt
語素Common

Definition

Sudden; abrupt.

colloquialdescriptions

How it's used

Functions primarily as a bound morpheme in Cantonese rather than a standalone adjective. It carries a sense of instability or unpredictability, often appearing in reduplicated structures like 忽冷忽熱 to describe fluctuating states or moods. Unlike 突然, which acts as an adverbial modifier, 忽 is almost exclusively found within compound words.

Common phrases

hot and cold (mood or temperature)
suddenly have a wild idea

Common mistake

Avoid using 忽 as a standalone adjective to mean sudden, as it will sound unnatural or archaic. Always use 突然 or 忽然 for the adverbial meaning.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector