mou4 naa1 naa1無嗱嗱无嗱嗱

Jyutpingmou4 naa1 naa1
Yalemòuh nā nā

Definition

Suddenly and without any reason.

colloquialdaily actionsother

How it's used

Expresses a sense of bewilderment or annoyance at an event that lacks a clear cause or warning. It is frequently used to describe actions or changes that feel intrusive or disruptive to the current situation. The term carries a slightly informal, conversational weight that makes it perfect for venting frustrations about random occurrences.

Examples

Why is she crying all of a sudden?
It started pouring out of nowhere, what a bummer.

Common phrases

to lose one's temper for no reason
to giggle for no apparent reason

Common mistake

Do not confuse this with 突然, which is a more neutral or formal way to say suddenly. 無嗱嗱 specifically emphasizes the lack of a logical reason or trigger, whereas 突然 simply focuses on the timing.

Grammar color guide

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