Related words and phrases (definition of thirty from the cambridge advanced learner's dictionary & thesaurus © cambridge university press) Discover everything about the word thirty in english: Meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. He is in his thirties. He was tall, thirtyish [=about 30 years old], and had glasses and brown hair. A cardinal number, 10 times 3. See examples of thirty used in a sentence. The meaning of thirty is a number equal to three times 10. How to use thirty in a sentence.

See examples of thirty used in a sentence. The meaning of thirty is a number equal to three times 10. How to use thirty in a sentence.