implacable
im·pla·ca·ble/ɪmˈplækəbəl/adjective
implacable is spelled I-M-P-L-A-C-A-B-L-E: 10 letters and 4 syllables (im·pla·ca·ble). It appears about once in every 2 million words in written English, the 46,473rd most frequent word form (wordfreq, 2021 data). As an adjective, implacable means “Not able to be placated or appeased” (English Wiktionary, September 2026).
How many letters and syllables are in implacable?
| Letters | 10: I-M-P-L-A-C-A-B-L-E |
|---|---|
| Syllables | 4: im·pla·ca·ble |
| In writing | about once in every 2 million words; the 46,473rd most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is implacable?
Implacable appears about once in every 2 million words in written English, the 46,473rd 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 implacable?
- UK /ɪmˈplækəb(ə)l/
- UK /-ˈpleɪ-/
- US /ɪmˈplækəbəl/
Implacable has 4 syllables, split im·pla·ca·ble in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-implacable.wav, En-us-implacable.ogg, Wikimedia Commons (author and licence on each file's page).
What rhymes with implacable?
One word on PlainSpell end in the same sounds as implacable from its last stressed vowel (/ækəbəl/):
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 implacable
- more implacable comparative
- most implacable superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does implacable mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Not able to be placated or appeased.
- 2
Impossible to prevent or stop; inexorable, unrelenting, unstoppable.
- 3
Adamant; immovable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Implacable in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| German | unversöhnlich , unerbittlich |
| Portuguese | implacável |
| Spanish | implacable , tenaz |
| French | implacable, irréductible |
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 implacable come from?
From Middle English implācāble (“immitigable, unappeasable”) from Old French implacable (“harsh, unrelenting; implacable”) (modern French implacable), from Latin implācābilis (“unappeasable, implacable; irreconcilable”), from im- (variant of in- (prefix meaning ‘not’)) + plācābilis (“placable; appeasing, moderating, pacifying, propitiating; acceptable”) (from plācō (“to assuage, pacify, placate; to appease; to reconcile”) + -bilis (suffix forming adjectives indicating a capacity or worth of being acted upon)).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).