erg

/ɜːɡ/

//ɜːɡ// noun

"erg" is a 3-letter English headword indexed on PlainSpell.

The verdict

“erg” sits in 20 confusable pairs (corpus #48,222) as a noun. The look-alike neighbours are the real trap.

#48,222
frequency rank, English
2,246
“E” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10⁻⁷ joules.

Corpus desk

Index EN-erg · erg · English

erg · rank #48,222 · 0 variants · 20 confusables

  • FREQ-MID #48,222
  • LEN-MID 3 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH Enright

Nearest frequency peer: Enright (-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.

Frequency neighbours of confusable “erg”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “erg” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

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).

erg vs ex
33% similar
erg vs et
33% similar
erg vs EU
0% similar

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

Key facts for erg
PropertyValue
Headworderg
LanguageEnglish
Part of speechNoun
IPA/ɜːɡ/
Letters3
Frequency rank#48,222
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “erg”

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).erglands 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 “Enright” (#48,221), “eucharistic” (#48,223), “Eusebius” (#48,224). Among 2,246 “E” headwords, “erg” is #48,222. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for erg is neighbouring look-alikes ("ex", "et", …), not just typos; it is anoun pronounced /ɜːɡ/. Frequency #48,222 among 2,246 “E” headwords. Gloss: "A unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10⁻⁷ joules.".

Our edit-distance generator produced no likely misspellings for erg, typically a sign the spelling maps closely to how the word sounds. It also participates in 20 confusable-pair relationships, "ex", "et", "EU", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Ancient Greek ἔργον (érgon, “work”). Doublet of ergon and work. The correct English form is erg, spelled E-R-G.

Definition

  1. 1
    A unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10⁻⁷ joules.

Etymology

From Ancient Greek ἔργον (érgon, “work”). Doublet of ergon and work.

This word in other languages

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 "erg"?
"erg" is spelled E-R-G. The IPA pronunciation is /ɜːɡ/.
What does "erg" mean?
As a noun, "erg" means: A unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10⁻⁷ joules.
What words are commonly confused with "erg"?
"erg" is commonly confused with "ex", "et", "EU". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "erg"?
The IPA (International Phonetic Alphabet) transcription for "erg" is /ɜːɡ/. 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 "erg"?
From Ancient Greek ἔργον (érgon, “work”). Doublet of ergon and work. 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 "erg", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list