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
3,151
“T” headwords
18
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 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.

Corpus desk

Index EN-testosterone · testosterone · English

testosterone · rank #13,071 · 18 variants · 0 confusables

  • FREQ-MID #13,071
  • LEN-MEGA 12 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-HIGH 18 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH tents

Nearest frequency peer: tents (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rank peers near misspelling magnet “testosterone”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “testosterone” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026
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)

Frequency seat of misspelling magnet “testosterone”

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “tents” (#13,070), “Sylvia” (#13,068), “suppressed” (#13,067). Among 3,151 “T” headwords, “testosterone” is #13,071. 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 3,151 “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.

Recorded use

Wiktionary examples

These source excerpts show how testosterone appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Mammalian testes contain almost no testosterone because it is sent out into the body as quickly as it is made.
  2. The text recounts a 2011 experiment: Researchers tested 136 healthy young men’s testosterone levels, asked them about their political party affiliations, then gave them either a placebo or ten grams of AndroGel one percent, a high-end dose of a common form of testosterone often used in hormone replacement therapies.

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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "testosterone", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

accumulation#13,085proportional#13,045presbyterian#13,042congratulate#13,122

Similar misspelling depth

Headwords with a similar count of attested misspellings (18 here; floor ≥5).

authoritarian18 variantscoordinating18 variantsresemblance18 variantsauthenticity18 variants

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

Source: FrequencyWords open word-frequency list