Erc

name

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

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

The verdict

“Erc” sits in 20 confusable pairs (corpus #43,630) as a proper noun. The look-alike neighbours are the real trap.

#43,630
frequency rank, English
2,246
“E” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A member of the conspiracy that killed Cúchulainn, but was killed by his second cousin Conall the Victorious. Son of Cairbre Nia Fer and brother of Achall.

Corpus desk

Index EN-erc · Erc · English

Erc · rank #43,630 · 0 variants · 20 confusables

  • FREQ-MID #43,630
  • LEN-MID 3 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH equivalency

Nearest frequency peer: equivalency (-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 “Erc”

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

corpus weight

What this shows Bars place “Erc” 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).

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

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

Key facts for Erc
PropertyValue
HeadwordErc
LanguageEnglish
Part of speechProper noun
Letters3
Frequency rank#43,630
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “Erc”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).Erclands 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 “equivalency” (#43,629), “essayist” (#43,631), “excavate” (#43,632). Among 2,246 “E” headwords, “Erc” is #43,630. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for Erc is neighbouring look-alikes ("ex", "et", …), not just typos; it is aproper noun. Frequency #43,630 among 2,246 “E” headwords. Gloss: "A member of the conspiracy that killed Cúchulainn, but was killed by his second cousin Conall the Victorious. Son of Cairbre Nia Fer and brother of Achall.".

The misspelling generator found no plausible variants for Erc, a straightforward case of a spelling with little room for common typos. It also participates in 20 confusable-pair relationships, "ex", "et", "EU", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From Old Irish Erc (modern Irish Earc), a word for which the electronic Dictionary of the Irish language gives several meanings, but the most likely meaning for the name is "spotted, speckled, motley," from Proto-Celtic *ɸerkos (“perch”), ultimately from Pr… The correct English form is Erc, spelled E-R-C.

Definition

  1. 1
    A member of the conspiracy that killed Cúchulainn, but was killed by his second cousin Conall the Victorious. Son of Cairbre Nia Fer and brother of Achall.

Etymology

From Old Irish Erc (modern Irish Earc), a word for which the electronic Dictionary of the Irish language gives several meanings, but the most likely meaning for the name is "spotted, speckled, motley," from Proto-Celtic *ɸerkos (“perch”), ultimately from Proto-Indo-European *perḱ- (“colored”).

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 "Erc"?
"Erc" is spelled E-R-C.
What does "Erc" mean?
As a proper noun, "Erc" means: A member of the conspiracy that killed Cúchulainn, but was killed by his second cousin Conall the Victorious. Son of Cairbre Nia Fer and brother of Achall.
What words are commonly confused with "Erc"?
"Erc" is commonly confused with "ex", "et", "EU". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "Erc"?
From Old Irish Erc (modern Irish Earc), a word for which the electronic Dictionary of the Irish language gives several meanings, but the most likely meaning for the name is "spotted, speckled, motley," from Proto-Celtic *ɸerkos (“perch”), ultimate... 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 "Erc", not the corpus desk frequency band.

Same letter count

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

feu#43,641fib#43,642EAC#43,617DRI#43,613

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

Source: FrequencyWords open word-frequency list