testosterone

/tɛˈstɒ.stə.ɹəʊn/

//tɛˈstɒ.stə.ɹəʊn// noun

By · According to Wiktionary data (CC BY-SA) ·

"testosterone" is a 12-letter English headword indexed on PlainSpell.

The verdict

“testosterone” has 18 generated spelling variants in the English index at frequency #13,071. The variants make it a useful spelling check.

#13,071
frequency rank, English
27,828
“T” headwords
18
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A steroid hormone that stimulates development of male secondary sexual characteristics, produced mainly in the testes, but also in the ovaries and adrenal cortex.

Key facts for testosterone
PropertyValue
Headwordtestosterone
LanguageEnglish
Part of speechNoun
IPA/tɛˈstɒ.stə.ɹəʊn/
Letters12
Frequency rank#13,071
Misspellings tracked18
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “testosterone” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). testosterone lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 18 spelling variants around testosterone (IPA /tɛˈstɒ.stə.ɹəʊn/), anoun. Corpus frequency is #13,071 among 27,828 “T” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 18 likely wrong-spelling variants for testosterone, with forms such as "etstosterone", "tesotsterone", and "tesstosterone". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. This headword has no recorded confusable partner, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From test(is) + -o- + -sterone (“steroid hormone”). The correct English form is testosterone, spelled T-E-S-T-O-S-T-E-R-O-N-E.

Definition

  1. 1
    A steroid hormone that stimulates development of male secondary sexual characteristics, produced mainly in the testes, but also in the ovaries and adrenal cortex.
  2. 2
    Manly behavior, often of an aggressive or foolishly reckless nature.

Etymology

From test(is) + -o- + -sterone (“steroid hormone”).

This word in other languages

testosterona(Español)testostérone(Français)Testosteron(Deutsch)

Common misspellings

Also misspelled as:

  • etstosterone
  • tesotsterone
  • tesstosterone
  • testosetrone
  • testossterone
  • testosteorne
  • testosternoe
  • testosteroen
  • testosteronne
  • testosterrone
  • testostreone
  • testostterone
  • testotserone
  • testsoterone
  • testtosterone
  • tetsosterone
  • tsetosterone
  • ttestosterone

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of testosterone - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

etstosterone2tesotsterone2tesstosterone1testosetrone2testossterone1testosteorne2testosternoe2testosteroen2
Edit distance from "testosterone"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "testosterone"?
"testosterone" is spelled T-E-S-T-O-S-T-E-R-O-N-E. The IPA pronunciation is /tɛˈstɒ.stə.ɹəʊn/.
What does "testosterone" mean?
As a noun, "testosterone" means: A steroid hormone that stimulates development of male secondary sexual characteristics, produced mainly in the testes, but also in the ovaries and adrenal cortex.
What are common misspellings of "testosterone"?
Common misspellings include "etstosterone", "tesotsterone", "tesstosterone", "testosetrone", "testossterone". The correct spelling is "testosterone".
How do you pronounce "testosterone"?
The IPA (International Phonetic Alphabet) transcription for "testosterone" is /tɛˈstɒ.stə.ɹəʊn/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "testosterone"?
From test(is) + -o- + -sterone (“steroid hormone”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “testosterone”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-E-S-T-O-S-T-E-R-O-N-E - every other letter order is a misspelling in standard orthography.
  • Say it as /tɛˈstɒ.stə.ɹəʊn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list