experiment

/ɪkˈspɛɹ.ɪ.mənt/

//ɪkˈspɛɹ.ɪ.mənt// noun

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

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

The verdict

“experiment” has 15 generated spelling variants in the English index at frequency #3,751. The variants make it a useful spelling check.

#3,751
frequency rank, English
2,246
“E” headwords
15
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried.

Corpus desk

Index EN-experiment · experiment · English

experiment · rank #3,751 · 15 variants · 3 confusables

  • FREQ-COMMON #3,751
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 3 pairs
  • VAR-HIGH 15 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH enterprise

Nearest frequency peer: enterprise (-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 “experiment”

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

corpus weight

What this shows “experiment” 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).

experiment vs experiments
91% similar
experiment vs experimental
83% similar
experiment vs expedient
80% similar

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

Key facts for experiment
PropertyValue
Headwordexperiment
LanguageEnglish
Part of speechNoun
IPA/ɪkˈspɛɹ.ɪ.mənt/
Letters10
Frequency rank#3,751
Misspellings tracked15
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “experiment”

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).experimentlands 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 “enterprise” (#3,750), “Feb” (#3,752), “efficiency” (#3,749). Among 2,246 “E” headwords, “experiment” is #3,751. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 15 spelling variants around experiment (IPA /ɪkˈspɛɹ.ɪ.mənt/), anoun. Corpus frequency is #3,751 among 2,246 “E” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 15 likely wrong-spelling variants for experiment, with forms such as "epxeriment", "exepriment", and "expeirment". 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 3 confusable-pair relationships, "experiments", "experimental", "expedient", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English experiment, from Old French esperiment (French expérience), from Latin experimentum (“experience, attempt, experiment”), from experior (“to experience, to attempt”), itself from ex + *perior, in turn from Proto-Indo-European *per-. The correct English form is experiment, spelled E-X-P-E-R-I-M-E-N-T.

Definition

  1. 1
    A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried.
  2. 2
    Experience, practical familiarity with something.

Recorded use

Wiktionary examples

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

  1. conduct an experiment
  2. carry out some experiments

Etymology

From Middle English experiment, from Old French esperiment (French expérience), from Latin experimentum (“experience, attempt, experiment”), from experior (“to experience, to attempt”), itself from ex + *perior, in turn from Proto-Indo-European *per-.

This word in other languages

experimento(Español)expérience(Français)Experiment(Deutsch)experiência(Português)

Common misspellings

Also misspelled as:

  • epxeriment
  • exepriment
  • expeirment
  • experiemnt
  • experimennt
  • experimentt
  • experimetn
  • experimment
  • experimnet
  • expermient
  • experriment
  • expperiment
  • expreiment
  • exxperiment
  • xeperiment

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of experiment - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

epxeriment2exepriment2expeirment2experiemnt2experimennt1experimentt1experimetn2experimment1
Edit distance from "experiment"

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 "experiment"?
"experiment" is spelled E-X-P-E-R-I-M-E-N-T. The IPA pronunciation is /ɪkˈspɛɹ.ɪ.mənt/.
What does "experiment" mean?
As a noun, "experiment" means: A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried.
What words are commonly confused with "experiment"?
"experiment" is commonly confused with "experiments", "experimental", "expedient". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "experiment"?
The IPA (International Phonetic Alphabet) transcription for "experiment" is /ɪkˈspɛɹ.ɪ.mənt/. 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 "experiment"?
From Middle English experiment, from Old French esperiment (French expérience), from Latin experimentum (“experience, attempt, experiment”), from experior (“to experience, to attempt”), itself from ex + *perior, in turn from Proto-Indo-European *p... 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 "experiment", not the corpus desk frequency band.

Same letter count

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

enterprise#3,750efficiency#3,749incredibly#3,761journalist#3,764

Similar misspelling depth

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

subsequent15 variantsregulation15 variantspotentially15 variantsexhibition15 variants

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

Source: FrequencyWords open word-frequency list