English Meaning & Definitions
Equivalent to the sum of twenty and one; being one more than twenty.
- “She celebrated her twenty-first birthday last weekend.”
- “The collection consists of twenty-one unique paintings.”
The cardinal number that is the sum of twenty and one; 21.
- “If you add twelve to nine, you get twenty-one.”
- “Twenty-one is traditionally considered the age of legal adulthood in various jurisdictions.”
English Synonyms & Near Equivalents
English Antonyms & Opposites
Comprehensive Thesaurus Breakdown
Compare formal, informal, literary synonyms and register nuances for “twenty-one”.
Derived from Old English 'twēntiġ' (twenty) combined with 'ān' (one), reflecting the Germanic base-ten counting system where numbers between twenty and thirty are formed by adding units to the decade.
Think of it as two tens plus one more: 20 + 1 = 21.
Frequently Asked Questions About “twenty-one”
1. What is the meaning of “twenty-one” in English?
In English, twenty-one (adjective) is defined as: “Equivalent to the sum of twenty and one; being one more than twenty.”.
2. How do you use “twenty-one” in a sentence?
“She celebrated her twenty-first birthday last weekend.”
3. What are English synonyms of “twenty-one”?
4. What is the etymology and word origin of “twenty-one”?
Derived from Old English 'twēntiġ' (twenty) combined with 'ān' (one), reflecting the Germanic base-ten counting system where numbers between twenty and thirty are formed by adding units to the decade.
🇬🇧More English Words to English
View all English words →A measurement of time indicating an instantaneous occurrence or a state where no time has elapsed.
The base unit of time in the International System of Units (SI), equal to the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.
A specific duration of time equal to one hour and forty-six minutes and twelve seconds.
The cardinal number equal to one thousand million (1,000,000,000), expressed in scientific notation as 10^9.