addenda

/əˈdɛn.də/

//əˈdɛn.də// noun

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

"addenda" is a 7-letter English headword indexed on PlainSpell.

The verdict

“addenda” is uncommon English (frequency #92,304 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.

#92,304
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - plural of addendum

Corpus desk

Index EN-addenda · addenda · English

addenda · rank #92,304 · 0 variants · 0 confusables

  • FREQ-RARE #92,304
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH acing

Nearest frequency peer: acing (-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.

Long-tail ranks near “addenda”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “addenda” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for addenda
PropertyValue
Headwordaddenda
LanguageEnglish
Part of speechNoun
IPA/əˈdɛn.də/
Letters7
Frequency rank#92,304
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “addenda” in English

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).addendafalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “acing” (#92,303), “adduct” (#92,305), “Ades” (#92,306). Among 3,931 “A” headwords, “addenda” is #92,304. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

addenda is uncommon English at frequency #92,304 among 3,931 “A” headwords, classed as anoun, transcribed /əˈdɛn.də/. Rarity is why readers land here mid-draft. Gloss: "plural of addendum".

No generated misspelling entries exist for addenda in our index, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.

This headword's origin isn't recorded in our source data, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is addenda, spelled A-D-D-E-N-D-A.

Definition

  1. 1
    plural of addendum

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 "addenda"?
"addenda" is spelled A-D-D-E-N-D-A. The IPA pronunciation is /əˈdɛn.də/.
What does "addenda" mean?
As a noun, "addenda" means: plural of addendum
How do you pronounce "addenda"?
The IPA (International Phonetic Alphabet) transcription for "addenda" is /əˈdɛn.də/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "addenda" come from?
"addenda" 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "addenda", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

Ahriman#92,312Ajaccio#92,314Alarcon#92,317allelic#92,324

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

Source: FrequencyWords open word-frequency list