amplitude

/ˈæm.plɪ.tud/

//ˈæm.plɪ.tud// noun

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

"amplitude" is a 9-letter English headword indexed on PlainSpell.

The verdict

“amplitude” has 13 generated spelling variants in the English index at frequency #20,031. The variants make it a useful spelling check.

#20,031
frequency rank, English
3,931
“A” headwords
13
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The measure of the size of something, especially its width or breadth; largeness, magnitude.

Corpus desk

Index EN-amplitude · amplitude · English

amplitude · rank #20,031 · 13 variants · 1 confusable

  • FREQ-MID #20,031
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 1 pairs
  • VAR-HIGH 13 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH almonds

Nearest frequency peer: almonds (-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 “amplitude”

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

corpus weight

What this shows “amplitude” 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

Visual similarity to commonly confused words

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

amplitude vs aptitude
78% similar

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

Key facts for amplitude
PropertyValue
Headwordamplitude
LanguageEnglish
Part of speechNoun
IPA/ˈæm.plɪ.tud/
Letters9
Frequency rank#20,031
Misspellings tracked13
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “amplitude”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).amplitudelands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “almonds” (#20,030), “analogue” (#20,032), “allotted” (#20,029). Among 3,931 “A” headwords, “amplitude” is #20,031. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around amplitude (IPA /ˈæm.plɪ.tud/), anoun. Corpus frequency is #20,031 among 3,931 “A” headwords. Wiktionary lists 8 senses, so context still picks the gloss.

Our generated misspelling index lists 13 likely wrong-spelling variants for amplitude, with forms such as "amlpitude", "ammplitude", and "ampiltude". 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. It also participates in 1 confusable-pair relationship, "aptitude", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: Etymology tree Latin amplus Proto-Indo-European *-tu- Proto-Indo-European *-d- Proto-Indo-European *-Hō Proto-Italic *tūdō Latin -tūdō Latin amplitūdōder. Middle French amplitudebor. English amplitude Borrowed from Middle French amplitude, from Latin amplit… The correct English form is amplitude, spelled A-M-P-L-I-T-U-D-E.

Definition

  1. 1
    The measure of the size of something, especially its width or breadth; largeness, magnitude.
  2. 2
    The maximum absolute value of the vertical component of a curve or function, especially one that is periodic.
  3. 3
    The maximum absolute value of some quantity that varies.
  4. 4
    The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator.
  5. 5
    The arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object.
  6. 6
    The horizontal line which measures the distance to which a projectile is thrown; the range.
  7. 7
    The range of motion of the gymnast's body while performing a skill.
  8. 8
    The range of environmental conditions in which an organism can survive.

Recorded use

Wiktionary examples

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

  1. The cathedral of Lincoln […] is a magnificent structure, proportionable to the amplitude of the diocese.
  2. amplitude of mind

Etymology

Etymology tree Latin amplus Proto-Indo-European *-tu- Proto-Indo-European *-d- Proto-Indo-European *-Hō Proto-Italic *tūdō Latin -tūdō Latin amplitūdōder. Middle French amplitudebor. English amplitude Borrowed from Middle French amplitude, from Latin amplitūdō, from amplus (“large”). By surface analysis, ample + -itude.

This word in other languages

amplitud(Español)amplitude(Français)Amplitude(Deutsch)amplitude(Português)

Common misspellings

Also misspelled as:

  • amlpitude
  • ammplitude
  • ampiltude
  • amplitdue
  • amplittude
  • amplitudde
  • amplitued
  • ampliutde
  • ampllitude
  • ampltiude
  • ampplitude
  • apmlitude
  • maplitude

Misspelling Pattern Breakdown

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

amlpitude2ammplitude1ampiltude2amplitdue2amplittude1amplitudde1amplitued2ampliutde2
Edit distance from "amplitude"

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 "amplitude"?
"amplitude" is spelled A-M-P-L-I-T-U-D-E. The IPA pronunciation is /ˈæm.plɪ.tud/.
What does "amplitude" mean?
As a noun, "amplitude" means: The measure of the size of something, especially its width or breadth; largeness, magnitude.
What words are commonly confused with "amplitude"?
"amplitude" is commonly confused with "aptitude". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "amplitude"?
The IPA (International Phonetic Alphabet) transcription for "amplitude" is /ˈæm.plɪ.tud/. 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 "amplitude"?
Etymology tree Latin amplus Proto-Indo-European *-tu- Proto-Indo-European *-d- Proto-Indo-European *-Hō Proto-Italic *tūdō Latin -tūdō Latin amplitūdōder. Middle French amplitudebor. English amplitude Borrowed from Middle French amplitude, from La... 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 "amplitude", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

Alejandro#20,028badminton#20,042barbarian#20,043Wiltshire#20,017

Similar misspelling depth

Headwords with a similar count of attested misspellings (13 here; floor ≥5).

signifies13 variantsdignified13 variantsgoldfish13 variantsgrotesque13 variants

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

Source: FrequencyWords open word-frequency list