dai2

Jyutpingdai2
Yaledái

Definition

Foundation or base.

colloquialdescriptions

How it's used

Although written as 柢 in formal contexts, native speakers almost exclusively use 底 to represent this sound and meaning in daily life. It functions as a versatile noun for the bottom of an object, the foundation of an argument, or a person's hidden history or background. Using the character 柢 will likely confuse readers as it is rarely seen outside of specific dictionary entries.

Examples

This matter has no foundation, don't believe it.

Common phrases

unfathomable or lacking a solid basis
to investigate someone's background

Common mistake

Do not confuse this with the character 柢, which is effectively obsolete in modern Cantonese writing. Always use 底 when referring to a base, bottom, or background to ensure your writing is natural and readable.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector