plug

/plʌɡ/

//plʌɡ// noun

"plug" is a 4-letter English headword indexed on PlainSpell.

The verdict

“plug” is a regularly-used English word, ranked #5,726 in English word frequency and used as a noun.

#5,726
frequency rank, English
4
letters
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A pronged connecting device which fits into a mating socket, especially an electrical one.

Visual similarity to commonly confused words

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

plug vs PU
0% similar
plug vs put
50% similar
plug vs pub
50% similar

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

Key facts for plug
PropertyValue
Headwordplug
LanguageEnglish
Part of speechNoun
IPA/plʌɡ/
Letters4
Frequency rank#5,726
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “plug” 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). plug 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 plug is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /plʌɡ/. Corpus data places it at rank #5,726 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 20 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 6 likely wrong-spelling variants for plug, with forms such as "lpug", "plgu", and "pllug". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 20 confusable-pair relationships, "PU", "put", "pub", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Dutch plug, from Middle Dutch plugge (“peg, plug”), from Old Dutch *pluggi, from Proto-West Germanic *plugi. Further origin unknown. Possibly from Proto-Germanic *plugjaz, but the word seems originally restricted to northern continental West Germanic. … The correct English form is plug, spelled P-L-U-G.

Definition

  1. 1
    A pronged connecting device which fits into a mating socket, especially an electrical one.
  2. 2
    A pronged connecting device which fits into a mating socket, especially an electrical one.
  3. 3
    Any piece of wood, metal, or other substance used to stop or fill a hole.
  4. 4
    A flat oblong cake of pressed tobacco.
  5. 5
    A high, tapering silk hat.
  6. 6
    A worthless horse.
  7. 7
    Any worn-out or useless article.
  8. 8
    A book that fails to sell.
  9. 9
    A block of wood let into a wall to afford a hold for nails.
  10. 10
    A promotion (act of promoting) of a product (such as a book, film or play) or other thing, concept, etc, for example during an interview or a commercial.
  11. 11
    A body of once molten rock that hardened in a volcanic vent. Usually round or oval in shape.
  12. 12
    A type of lure consisting of a rigid, buoyant or semi-buoyant body and one or more hooks.
  13. 13
    A small seedling grown in a tray from expanded polystyrene or polythene filled usually with a peat or compost substrate.
  14. 14
    A growth of protoplasm that closes the pore openings in the cells of certain algae.
  15. 15
    A short cylindrical piece of jewellery commonly worn in larger-gauge body piercings, especially in the ear.
  16. 16
    A drug dealer.
  17. 17
    A branch from a water-pipe to supply a hose.
  18. 18
    A standard, modular fuselage component that can be added or removed.
  19. 19
    Ellipsis of spark plug.
  20. 20
    Ellipsis of fireplug (“fire hydrant”).

Etymology

From Dutch plug, from Middle Dutch plugge (“peg, plug”), from Old Dutch *pluggi, from Proto-West Germanic *plugi. Further origin unknown. Possibly from Proto-Germanic *plugjaz, but the word seems originally restricted to northern continental West Germanic. Perhaps ultimately from the same source as Dutch plag (“cut-out sod”), itself considered to be from a substrate. Compare German Low German Plüg, Norwegian plug (“peg, wedge”, probably borrowed from Middle Low German), German Pflock (“peg”, restricted to Central German and phonetically divergent). Possibly akin to Lithuanian plúkti (“to strike, hew”).

Synonyms

This word in other languages

Common misspellings

Also misspelled as: lpug,plgu,pllug,plugg,pplug,pulg

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of plug - 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.

lpug2plgu2pllug1plugg1pplug1pulg2
Edit distance from "plug"

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 "plug"?
"plug" is spelled P-L-U-G. The IPA pronunciation is /plʌɡ/.
What does "plug" mean?
As a noun, "plug" means: A pronged connecting device which fits into a mating socket, especially an electrical one.
What words are commonly confused with "plug"?
"plug" is commonly confused with "PU", "put", "pub". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "plug"?
The IPA (International Phonetic Alphabet) transcription for "plug" is /plʌɡ/. 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 "plug"?
From Dutch plug, from Middle Dutch plugge (“peg, plug”), from Old Dutch *pluggi, from Proto-West Germanic *plugi. Further origin unknown. Possibly from Proto-Germanic *plugjaz, but the word seems originally restricted to northern continental West ... 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 “plug”

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

  • The one correct English spelling is P-L-U-G - every other letter order is a misspelling in standard orthography.
  • Say it as /plʌɡ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “PU” - see the side-by-side comparison. plug vs PU
  • 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