Pronunciation: [twˈɛnti wˌɒn] (IPA) 
The word "twenty one" is spelled with the letters T-W-E-N-T-Y O-N-E. In IPA phonetic transcription, it is pronounced as /ˈtwɛnti wʌn/. The first syllable starts with the "t" sound followed by the "w" sound, and the second syllable has the "eh" sound and the "n" sound. The final syllable has the "w" sound and the "uh" sound. When pronounced correctly, the stress is on the first syllable, making it "TWENT-y one".
Twenty-one is a numerical term that refers to the cardinal number immediately following twenty and preceding twenty-two. It is a natural number that falls within the range of 20 to 30 on the number line. The term "twenty-one" can be written as both a word and a numeral, with the numeral representation being "21."
The term "twenty-one" is derived from the combination of the words "twenty" and "one." The word "twenty" derives from Old English and has its roots in the Germanic language; it indicates a quantity or a numerical value equivalent to two tens or twice the value of ten. The word "one" is also of Old English origin and signifies the numerical value of a single unit or the first cardinal number.
In various contexts, "twenty-one" can represent different concepts. In the game of blackjack or twenty-one, it refers to the highest possible point total for a hand, achieved when an ace and a ten-point card (such as a ten, jack, queen, or king) are drawn. It can also signify the age of an individual, symbolizing the transition into adulthood for many cultures. Furthermore, it can represent the 21st century, a division of time encompassing the years from 2001 to 2100.
Overall, "twenty-one" is an important numerical term used in different domains, representing a specific quantity or value, depending on the context in which it is applied.
The etymology of the word "twenty one" can be understood by examining each component separately.
"Twenty" originates from the Old English word "twēntig", which is derived from the Proto-Germanic word "twaihund", meaning "two tens". This term combines "twai" (meaning "two") and "hund" (meaning "tens").
"One" traces back to the Old English word "ān", which comes from the Proto-Germanic word "ainaz". This term initially meant "one" but eventually became the root of various related words in Germanic languages.
When these two components are combined, "twenty one" simply refers to the number formed by combining twenty and one.
It is worth noting that the etymology provided here refers to the English language; the terms for "twenty one" in other languages may have different origins.
