unilateral

/ˌjuːnɪˈlætərəl/

//ˌjuːnɪˈlætərəl// adj

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

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

The verdict

“unilateral” is a moderately-common English word, ranked #18,454 in English word frequency and used as an adjective.

#18,454
frequency rank, English
10
letters
14
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Done by one side only.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

unilateral vs unilaterally
83% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for unilateral
PropertyValue
Headwordunilateral
LanguageEnglish
Part of speechAdjective
IPA/ˌjuːnɪˈlætərəl/
Letters10
Frequency rank#18,454
Misspellings tracked14
Confusable pairs1
SourceWiktionary (kaikki.org)

Where “unilateral” 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). unilateral lands here:

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

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

Spelling & Dictionary Insight

The English entry for unilateral is 10 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˌjuːnɪˈlætərəl/. Corpus data places it at rank #18,454 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 14 likely wrong-spelling variants for unilateral, with forms such as "nuilateral", "uinlateral", and "unialteral". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 1 confusable-pair relationship, "unilaterally", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: A modern creation (circa 1802), from New Latin ūnilaterālis (“one-sided”), from Latin ūnus (“one”) + laterālis (“sided, lateral”), equivalent to uni- + lateral. The correct English form is unilateral, spelled U-N-I-L-A-T-E-R-A-L.

Definition

  1. 1
    Done by one side only.
  2. 2
    Affecting only one side of the body.
  3. 3
    Binding or affecting one party only.

Etymology

A modern creation (circa 1802), from New Latin ūnilaterālis (“one-sided”), from Latin ūnus (“one”) + laterālis (“sided, lateral”), equivalent to uni- + lateral.

Synonyms

one-sided

This word in other languages

unilateral(Español)unilatéral(Français)einseitig(Deutsch)unilateral(Português)

Common misspellings

Also misspelled as: nuilateral,uinlateral,unialteral,unilaetral,unilatearl,unilaterall,unilaterla,unilaterral,unilatreal,unilatteral,unillateral,uniltaeral,unliateral,unnilateral

Misspelling Pattern Breakdown

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

nuilateral2uinlateral2unialteral2unilaetral2unilatearl2unilaterall1unilaterla2unilaterral1
Edit distance from "unilateral"

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 "unilateral"?
"unilateral" is spelled U-N-I-L-A-T-E-R-A-L. The IPA pronunciation is /ˌjuːnɪˈlætərəl/.
What does "unilateral" mean?
As an adjective, "unilateral" means: Done by one side only.
What words are commonly confused with "unilateral"?
"unilateral" is commonly confused with "unilaterally". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "unilateral"?
The IPA (International Phonetic Alphabet) transcription for "unilateral" is /ˌjuːnɪˈlætərəl/. 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 "unilateral"?
A modern creation (circa 1802), from New Latin ūnilaterālis (“one-sided”), from Latin ūnus (“one”) + laterālis (“sided, lateral”), equivalent to uni- + lateral. 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 “unilateral”

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

  • The one correct English spelling is U-N-I-L-A-T-E-R-A-L - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌjuːnɪˈlætərəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “unilaterally” - see the side-by-side comparison. unilateral vs unilaterally
  • Browse more English words and confusable pairs in the same reference. English words
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