ADA

name

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

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

The verdict

“ADA” sits in 20 confusable pairs (corpus #10,976) as a proper noun. The look-alike neighbours are the real trap.

#10,976
frequency rank, English
3,931
“A” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of American Dental Association.

Corpus desk

Index EN-ada · ADA · English

ADA · rank #10,976 · 0 variants · 20 confusables

  • FREQ-MID #10,976
  • LEN-MID 3 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH accuse

Nearest frequency peer: accuse (-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 “ADA”

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

corpus weight

What this shows Bars place “ADA” 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).

ADA vs as
0% similar
ADA vs at
0% similar
ADA vs an
0% similar

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

Key facts for ADA
PropertyValue
HeadwordADA
LanguageEnglish
Part of speechProper noun
Letters3
Frequency rank#10,976
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “ADA”

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).ADAlands 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 “accuse” (#10,975), “adjusting” (#10,977), “accredited” (#10,974). Among 3,931 “A” headwords, “ADA” is #10,976. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for ADA is neighbouring look-alikes ("as", "at", …), not just typos; it is aproper noun. Frequency #10,976 among 3,931 “A” headwords. 7 recorded senses keep meaning in play.

Zero misspellings are on record for ADA in our index, which points to an orthography that plays by predictable English rules. It also participates in 20 confusable-pair relationships, "as", "at", "an", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No explicit etymology string is stored for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct English form is ADA, spelled A-D-A.

Definition

  1. 1
    Initialism of American Dental Association.
  2. 2
    Initialism of Americans for Democratic Action.
  3. 3
    Initialism of Americans with Disabilities Act.
  4. 4
    Initialism of American Diabetes Association.
  5. 5
    Initialism of Air Defense Artillery.
  6. 6
    Initialism of Association of Drainage Authorities.
  7. 7
    Initialism of Antideficiency Act.

Recorded use

Wiktionary example

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

  1. This information supplements (and should be read with) general guidance issued by the Office of Management and Budget (OMB) and the Office of Personnel Management (OPM) for administering an agency shutdown of operations due to a lapse in appropriations, consistent with the Antideficiency Act (ADA) (31 U.S.C. 1341-1342) and the pay, leave, and other releva…

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 "ADA"?
"ADA" is spelled A-D-A.
What does "ADA" mean?
As a proper noun, "ADA" means: Initialism of American Dental Association.
What words are commonly confused with "ADA"?
"ADA" is commonly confused with "as", "at", "an". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "ADA" come from?
"ADA" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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 "ADA", not the corpus desk frequency band.

Same letter count

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

BON#10,993tow#10,950rug#10,928IMO#11,045

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

Source: FrequencyWords open word-frequency list