• "Fifthteen" is the incorrect spelling of "fifteen."
  • "Fifteen" is the cardinal number between fourteen and sixteen, often used to denote age, quantity, or a specific position in a sequence.
For example...

1️⃣5️⃣ The fifteen-year-old girl, with her bright eyes and boundless energy, stood on the precipice of adulthood, ready to take on the world.

"Fifteen" in this sentence serves not only as a numerical value but also as a crucial element in characterizing the girl and her situation. It adds depth and meaning to the description, contributing to the overall image of a young woman on the verge of exciting new beginnings.
Fifthteen or Fifteen: Which is Correct?

"Fifteen" can be defined in several ways, depending on the context:

1. Cardinal number: It is the natural number that comes after fourteen and before sixteen. It is represented by the numeral "15" or "XV".

2. Quantity: It refers to a set of fifteen objects or entities.

3. Age: It denotes the age of someone who has completed fourteen years and has not yet turned sixteen.

4. Measurement: It can represent a specific unit of measurement depending on the context.

5. Fraction: It can be expressed as a fraction, such as 15/1, 3/20, or 0.75.

6. Ordinal number: It signifies the fifteenth position in a sequence.

7. Slang: In some contexts, "fifteen" can be slang for a police officer.

Additionally, "fifteen" can have specific meanings in different fields:

  • Chemistry: Atomic number of the element phosphorus.
  • Music: A musical interval spanning fifteen semitones.
  • Tarot: The "Devil" card in the Tarot deck.
  • Baseball: The number of players on the field at a time.

Examining the graph below, we can see that "fifteen" has been used more frequently than "fifteenth." Fifteen was used in large numbers then its use dipped from the 1920s to the 1980s. Now, it is experiencing a slight increase again.

Fifthteen or Fifteen: Which is Correct?
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How do we pronounce fifteen?

In American English, "fifteen" is pronounced fif·teen.

In British English, "fifteen" is pronounced fif·teen.

Additional notes:
These are just the standard pronunciations, and there may be slight variations depending on regional accents and individual speech patterns.

Why does the misspelling of fifteen as fifthteenth occur?

There are several reasons why the misspelling of "fifteen" as "fifthteenth" occurs:

1. Overgeneralization of ordinal numbers: Children learning English might overgeneralize the rule of adding "-th" to form ordinal numbers from cardinal numbers. They might mistakenly apply this rule to "fifteen," which already contains the suffix "-teen" and therefore doesn't need further modification.

2. Misanalysis of the word structure: Some people might misinterpret "fifteen" as having two separate parts: "fifth" and "teen." This could lead them to believe that adding "-th" is necessary to form the correct ordinal number.

3. Lack of exposure to proper spelling: Limited exposure to correct spelling and grammar can result in misspellings. If someone hasn't seen the word "fifteenth" written correctly many times, they might be more likely to make a mistake.

4. Typographical errors: In the age of digital communication, typos are increasingly common. A simple keyboard slip or incorrect autocorrect suggestion could easily lead to the misspelling "fifthteenth."

5. Difficulty with pronunciation: Some people might find the pronunciation of "fifteenth" challenging, especially if they are not native English speakers. This could lead them to misspell the word when writing.

If you want to prevent any of these grammar or spelling errors, you can get the help of an AI proofreader.

Other misspellings of fifteen

Besides "fifthteen", here are some other common misspellings of the word "fifteen":

  1. Fithteen
  2. Fiften
  3. Fiftin
  4. Fiveteen
  5. Fifftheen
  6. Fifteenthn
  7. Fithteenthe
  8. Fivetheen

Example sentences of the misspelling of fifteen

Below are example sentences highlighting that "fifthteen" is an incorrect spelling.

  1. Hold on, "fifthteen" isn't quite right. The correct spelling is "fifteen."
  2. Double-check your writing! "Fifthteen" has a sneaky "th" that slipped in, the correct spelling is "fifteen."
  3. "Fifthteen" might look familiar, but it's missing a letter. Remember, it's "fifteen" not "fifthteen."
  4. Avoid confusion and typos, the correct spelling is "fifteen," not "fifthteen."
  5. Don't let a simple mistake trip you up! "Fifthteen" isn't a word, it's "fifteen."

Example sentences of fifteen

Sentences using "fifteen" as a cardinal number:

  1. There were fifteen people at the party, laughing and having fun.
  2. She bought fifteen apples at the grocery store.
  3. The book is fifteen pages long.
  4. The train will arrive in fifteen minutes.
  5. He turned fifteen years old yesterday.

Sentences using "fifteen" as an adjective:

  1. The class is divided into fifteen equal groups.
  2. I can only play the piano for fifteen minutes at a time.
  3. She ran a fifteen-minute mile.
  4. They lived in a fifteen-story building.
  5. He is the fifteenth person in line.

Sentences using "fifteen" in other ways:

  1. He looked lost in fifteen different directions at once.
  2. She was determined to give it one fifteen more tries.
  3. The puzzle had fifteen pieces missing.
  4. She gave him the fifteen-dollar bill she had promised him.
  5. Fifteen years ago, I wouldn't have believed I would be where I am today.

Synonyms for fifteenth

  • XV (Roman numeral)
  • 15th (fifteenth)

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References:

Definition of FIFTEEN
a number that is one more than fourteen; the first point scored by a side in a game of tennis —called also five… See the full definition