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
3,151
“T” headwords
15
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Shaped like a triangle.

Corpus desk

Index EN-triangular · triangular · English

triangular · rank #16,809 · 15 variants · 0 confusables

  • FREQ-MID #16,809
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-HIGH 15 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH therein

Nearest frequency peer: therein (-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 “triangular”

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

corpus weight

What this shows “triangular” 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 triangular
PropertyValue
Headwordtriangular
LanguageEnglish
Part of speechAdjective
IPA/tɹaɪˈæŋ.ɡjə.lə/
Letters10
Frequency rank#16,809
Misspellings tracked15
Confusable pairs0
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “triangular”

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

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “therein” (#16,808), “there'll” (#16,807), “trooper” (#16,811). Among 3,151 “T” headwords, “triangular” is #16,809. 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 3,151 “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.

Recorded use

Wiktionary example

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

  1. A very neat old woman, still in her good outdoor coat and best beehive hat, was sitting at a polished mahogany table on whose surface there were several scored scratches so deep that a triangular piece of the veneer had come cleanly away,[…].

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.

Similar English words by spelling shape

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

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

ubiquitous#16,814stronghold#16,800witchcraft#16,831reluctance#16,784

Similar misspelling depth

Headwords with a similar count of attested misspellings (15 here; floor ≥5).

physicist15 variantspersecuted15 variantscommonplace15 variantshandicapped15 variants

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

Source: FrequencyWords open word-frequency list