unreasonable
un·rea·son·a·ble/ʌnˈɹiːz.(ə)nə.bl̩/adjective
unreasonable is spelled U-N-R-E-A-S-O-N-A-B-L-E, 5 syllables: un·rea·son·a·ble. The wrong spelling people search most is unresonable: about 10 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 27 of all searches for the word. Unreasonable is an adjective meaning “Without the ability to reason; unreasoning”.
How many letters and syllables are in unreasonable?
| Letters | 12: U-N-R-E-A-S-O-N-A-B-L-E |
|---|---|
| Syllables | 5: un·rea·son·a·ble |
| In writing | 5.6 times per million words; the 10,358th most frequent word form |
| Wrong spellings searched | 1; the most searched, unresonable, about 10 Bing searches a month (all of them) |
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).
How do you spell unreasonable?
Unreasonable is spelled U-N-R-E-A-S-O-N-A-B-L-E. One wrong spelling is searched or written often enough to measure; together they are about 1 in 27 of the searches for unreasonable in either form.
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). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is unreasonable?
Unreasonable appears 5.6 times per million words in written English, the 10,358th 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 unreasonable?
- /ʌnˈɹiːz.(ə)nə.bl̩/
Unreasonable has 5 syllables, split un·rea·son·a·ble in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-uk-unreasonable.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of unreasonable
- more unreasonable comparative
- most unreasonable superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does unreasonable mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Without the ability to reason; unreasoning.
- 2
Not reasonable; going beyond what could be expected or asked for.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Unreasonable in Spanish, French, German and Portuguese
In the sense not reasonable:
| Language | Words |
|---|---|
| French | déraisonnable |
| German | unvernünftig, kompromisslos, nicht nachvollziehbar, unklug, übertrieben, unmäßig |
| Portuguese | insensato, irracional |
| Spanish | irrazonable |
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 unreasonable come from?
From Middle English unresonable, equivalent to un- + reasonable, originally partly after Latin irratiōnābilis.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).