The proper pronunciation of “thirty” is “THIR-tee”. The stress is on the primary syllable, and the “r” is pronounced with a slight trill. It’s a widespread phrase that’s used to explain the quantity 30.
It is very important pronounce “thirty” accurately in an effort to be understood clearly. Mispronouncing the phrase can result in confusion and errors in communication. Moreover, announcing “thirty” accurately may also help to enhance your general pronunciation expertise.