ID

/aɪˈdiː/

//aɪˈdiː// noun

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

"id" is a 2-letter English headword indexed on PlainSpell.

The verdict

“ID” sits in 20 confusable pairs (corpus #2,448) as a noun. The look-alike neighbours are the real trap.

#2,448
frequency rank, English
2,140
“I” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of identification / identifier / identity document.

Corpus desk

Index EN-id · ID · English

ID · rank #2,448 · 0 variants · 20 confusables

  • FREQ-COMMON #2,448
  • LEN-SHORT 2 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH hundreds

Nearest frequency peer: hundreds (-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 neighbourhood for “ID”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “ID” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

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).

ID vs in
0% similar
ID vs is
0% similar
ID vs it
0% similar

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

Key facts for ID
PropertyValue
HeadwordID
LanguageEnglish
Part of speechNoun
IPA/aɪˈdiː/
Letters2
Frequency rank#2,448
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “ID” sits in English frequency

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).IDlands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “hundreds” (#2,447), “improved” (#2,449), “Jewish” (#2,450). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for ID is neighbouring look-alikes ("in", "is", …), not just typos; it is anoun pronounced /aɪˈdiː/. Frequency #2,448 among 2,140 “I” headwords. 10 recorded senses keep meaning in play.

ID doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. It also participates in 20 confusable-pair relationships, "in", "is", "it", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is ID, spelled I-D.

Definition

  1. 1
    Abbreviation of identification / identifier / identity document.
  2. 2
    An electronic music track without an official title.
  3. 3
    An ident.
  4. 4
    Initialism of image description.
  5. 5
    Initialism of intellectual disability.
  6. 6
    Initialism of intelligent design.
  7. 7
    Initialism of industrial design.
  8. 8
    Initialism of inside diameter or inner diameter or internal diameter.
  9. 9
    Initialism of industry discount.
  10. 10
    Initialism of iron deficiency.

Recorded use

Wiktionary examples

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

  1. Show me your ID.
  2. The keys are not as flat and offer more space between them. Better yet, you still maintain a physical row of function keys (including ESC) and the Touch ID sensor is still here.

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 "ID"?
"ID" is spelled I-D. The IPA pronunciation is /aɪˈdiː/.
What does "ID" mean?
As a noun, "ID" means: Abbreviation of identification / identifier / identity document.
What words are commonly confused with "ID"?
"ID" is commonly confused with "in", "is", "it". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "ID"?
The IPA (International Phonetic Alphabet) transcription for "ID" is /aɪˈdiː/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "ID" come from?
"ID" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

What to do next

You've looked up "ID". Here's where to go from here.

  • "ID" maps to 20 confusable pairs in this vintage; the highest-scored is "in". View pair
  • Usage frequency rank #2,448 among English headwords in this corpus. Corpus statistics
  • Browse more English words in the "I" letter cohort. I–Z browse
  • PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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