deduction

/dɪˈdʌkʃən/

//dɪˈdʌkʃən// noun

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

"deduction" is a 9-letter English headword indexed on PlainSpell.

The verdict

“deduction” has 14 generated spelling variants in the English index at frequency #15,795. The variants make it a useful spelling check.

#15,795
frequency rank, English
3,470
“D” headwords
14
tracked misspellings
5
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - That which is deducted; that which is subtracted or removed.

Corpus desk

Index EN-deduction · deduction · English

deduction · rank #15,795 · 14 variants · 5 confusables

  • FREQ-MID #15,795
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-MID 5 pairs
  • VAR-HIGH 14 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH despicable

Nearest frequency peer: despicable (+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.

Rank peers near misspelling magnet “deduction”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “deduction” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

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).

deduction vs detection
78% similar
deduction vs depiction
78% similar
deduction vs defection
78% similar

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

Key facts for deduction
PropertyValue
Headworddeduction
LanguageEnglish
Part of speechNoun
IPA/dɪˈdʌkʃən/
Letters9
Frequency rank#15,795
Misspellings tracked14
Confusable pairs5
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “deduction”

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).deductionlands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “despicable” (#15,796), “Cummings” (#15,793), “detachment” (#15,797). Among 3,470 “D” headwords, “deduction” is #15,795. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 14 spelling variants around deduction (IPA /dɪˈdʌkʃən/), anoun. Corpus frequency is #15,795 among 3,470 “D” headwords. Wiktionary lists 5 senses, so context still picks the gloss.

Our generated misspelling index lists 14 likely wrong-spelling variants for deduction, with forms such as "ddeduction", "ddeuction", and "dedcution". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 5 confusable-pair relationships, "detection", "depiction", "defection", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle French déduction, from Latin deductio. Equivalent to deduct + -ion or deduce + -tion. The correct English form is deduction, spelled D-E-D-U-C-T-I-O-N.

Definition

  1. 1
    That which is deducted; that which is subtracted or removed.
  2. 2
    That which is deducted; that which is subtracted or removed.
  3. 3
    That which is deducted; that which is subtracted or removed.
  4. 4
    A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.
  5. 5
    A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.

Recorded use

Wiktionary examples

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

  1. Near-synonyms: extract, reduction; see also Thesaurus:decrement
  2. standard deduction

Etymology

From Middle French déduction, from Latin deductio. Equivalent to deduct + -ion or deduce + -tion.

This word in other languages

deducción(Español)déduction(Français)Abzug(Deutsch)dedução(Português)

Common misspellings

Also misspelled as:

  • ddeduction
  • ddeuction
  • dedcution
  • dedduction
  • deducction
  • deduciton
  • deducsion
  • deductino
  • deductionn
  • deductoin
  • deducttion
  • dedutcion
  • deudction
  • edduction

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of deduction - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

ddeduction1ddeuction2dedcution2dedduction1deducction1deduciton2deducsion1deductino2
Edit distance from "deduction"

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 "deduction"?
"deduction" is spelled D-E-D-U-C-T-I-O-N. The IPA pronunciation is /dɪˈdʌkʃən/.
What does "deduction" mean?
As a noun, "deduction" means: That which is deducted; that which is subtracted or removed.
What words are commonly confused with "deduction"?
"deduction" is commonly confused with "detection", "depiction", "defection". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "deduction"?
The IPA (International Phonetic Alphabet) transcription for "deduction" is /dɪˈdʌkʃən/. 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 "deduction"?
From Middle French déduction, from Latin deductio. Equivalent to deduct + -ion or deduce + -tion. 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 "deduction", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

criterion#15,790digestive#15,800endlessly#15,808extremist#15,814

Similar misspelling depth

Headwords with a similar count of attested misspellings (14 here; floor ≥5).

disconnect14 variantsflattering14 variantsgraphical14 variantshorrifying14 variants

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

Source: FrequencyWords open word-frequency list