deduce
de·duce/dɪˈdus/verb
deduce is spelled D-E-D-U-C-E: 6 letters and 2 syllables (de·duce). It appears about once in every 1 million words in written English, the 30,017th most frequent word form (wordfreq, 2021 data). People search “deduce vs induce” about 590 times a month (Google, United States). As a verb, deduce means “To reach (a conclusion) by applying rules of logic or other forms of reasoning to given premises or known facts” (English Wiktionary, September 2026).
How many letters and syllables are in deduce?
| Letters | 6: D-E-D-U-C-E |
|---|---|
| Syllables | 2: de·duce |
| In writing | about once in every 1 million words; the 30,017th most frequent word form |
| Wrong spellings searched | none measured in search |
| Pairs people search | |
| Rhymes with | |
| Same letters |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is deduce?
Deduce appears about once in every 1 million words in written English, the 30,017th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce deduce?
- /dɪˈdʒuːs/
- /dɪˈdjuːs/
- US /dɪˈdus/
Deduce has 2 syllables, split de·duce in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-deduce.ogg, Wikimedia Commons (author and licence on each file's page).
Words people confuse with deduce
Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).
Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).
What rhymes with deduce?
The 12 most written words on PlainSpell end in the same sounds as deduce from its last stressed vowel (/us/):
Spelled with the same letters in another order: deuced.
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of deduce
- deduces present, singular, he/she/it
- deducing participle, present
- deduced participle, past, singular, he/she/it, plural
- diduce
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does deduce mean?
The meanings the English Wiktionary records, quoted as written there (source below).
verb
- 1
To reach (a conclusion) by applying rules of logic or other forms of reasoning to given premises or known facts.
- 2
To examine, explain, or record (something) in an orderly manner.
- 3
archaicTo obtain (something) from some source; to derive.
- 4
archaicTo be derived or obtained from some source.
- 5
obsoleteTo take away (something); to deduct, to subtract (something).
to deduce a part from the whole
- 6
obsoleteTo lead (something) forth.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Deduce in Spanish, French, German and Portuguese
In the sense to reach (a conclusion) by applying rules of logic or other forms of reasoning:
| Language | Words |
|---|---|
| French | déduire |
| German | folgern, ableiten, herleiten, deduzieren |
| Portuguese | deduzir |
| Spanish | deducir |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does deduce come from?
From Late Middle English deducen (“to demonstrate, prove, show; to argue, infer; to bring, lead; to turn (something) to a use; to deduct”), borrowed from Latin dēdūcere, the present active infinitive of dēdūcō (“to lead or bring out or away; to accompany, conduct, escort; (figuratively) to derive, discover, deduce”); from dē- (prefix meaning ‘from, away from’) + dūcere (the present active infinitive of dūcō (“to conduct, guide, lead; to draw, pull; to consider, regard, think”), ultimately from Proto-Indo-European *dewk- (“to lead; to draw, pull”)).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).