triangular

/tɹaɪˈæŋ.ɡjə.lə/

//tɹaɪˈæŋ.ɡjə.lə// adj

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

"triangular" is a 10-letter English headword indexed on PlainSpell.

The verdict

“triangular” has 15 generated spelling variants in the English index at frequency #16,809. The variants make it a useful spelling check.

#16,809
frequency rank, English
27,828
“T” headwords
15
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Shaped like a triangle.

Key facts for triangular
PropertyValue
Headwordtriangular
LanguageEnglish
Part of speechAdjective
IPA/tɹaɪˈæŋ.ɡjə.lə/
Letters10
Frequency rank#16,809
Misspellings tracked15
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “triangular” 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). triangular 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 15 spelling variants around triangular (IPA /tɹaɪˈæŋ.ɡjə.lə/), anadjective. Corpus frequency is #16,809 among 27,828 “T” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 15 likely wrong-spelling variants for triangular, with forms such as "rtiangular", "tirangular", and "traingular". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From Middle English triangulare, trianguler, triangulere, from Old French triangulaire, triangulier and Latin triangulāris. By surface analysis, tri- + -angular. The correct English form is triangular, spelled T-R-I-A-N-G-U-L-A-R.

Definition

  1. 1
    Shaped like a triangle.
  2. 2
    Of, or pertaining to, triangles.
  3. 3
    Having a triangle as a base; as, a triangular prism, a triangular pyramid.
  4. 4
    Having three elements or parties; trilateral, tripartite.

Etymology

From Middle English triangulare, trianguler, triangulere, from Old French triangulaire, triangulier and Latin triangulāris. By surface analysis, tri- + -angular.

Synonyms

threesidetrigonal

This word in other languages

triangular(Español)triangulaire(Français)dreieckig(Deutsch)triangular(Português)

Common misspellings

Also misspelled as:

  • rtiangular
  • tirangular
  • traingular
  • triagnular
  • trianggular
  • triangluar
  • triangualr
  • triangularr
  • triangullar
  • triangulra
  • trianngular
  • trianuglar
  • trinagular
  • trriangular
  • ttriangular

Misspelling Pattern Breakdown

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

rtiangular2tirangular2traingular2triagnular2trianggular1triangluar2triangualr2triangularr1
Edit distance from "triangular"

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 "triangular"?
"triangular" is spelled T-R-I-A-N-G-U-L-A-R. The IPA pronunciation is /tɹaɪˈæŋ.ɡjə.lə/.
What does "triangular" mean?
As an adjective, "triangular" means: Shaped like a triangle.
What are common misspellings of "triangular"?
Common misspellings include "rtiangular", "tirangular", "traingular", "triagnular", "trianggular". The correct spelling is "triangular".
How do you pronounce "triangular"?
The IPA (International Phonetic Alphabet) transcription for "triangular" is /tɹaɪˈæŋ.ɡjə.lə/. 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 "triangular"?
From Middle English triangulare, trianguler, triangulere, from Old French triangulaire, triangulier and Latin triangulāris. By surface analysis, tri- + -angular. 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 “triangular”

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

  • The one correct English spelling is T-R-I-A-N-G-U-L-A-R - every other letter order is a misspelling in standard orthography.
  • Say it as /tɹaɪˈæŋ.ɡjə.lə/ (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