supersonic
adjective, noun
supersonic is spelled S-U-P-E-R-S-O-N-I-C: 10 letters and 4 syllables. It appears 1.4 times per million words in written English, the 23,835th most frequent word form (wordfreq, 2021 data). As an adjective, supersonic means “Greater than the speed of sound (in the same medium, and at the same temperature and pressure)” (English Wiktionary, September 2026).
How many letters and syllables are in supersonic?
| Letters | 10: S-U-P-E-R-S-O-N-I-C |
|---|---|
| Syllables | 4 (from its American pronunciation) |
| In writing | 1.4 times per million words; the 23,835th most frequent word form |
| Wrong spellings searched | none measured in search |
| Same letters |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; 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 supersonic?
Supersonic appears 1.4 times per million words in written English, the 23,835th 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 supersonic?
- US
Supersonic has 4 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vininn126-supersonic.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with supersonic?
No other word on PlainSpell ends in the same sounds as supersonic.
Spelled with the same letters in another order: percussion.
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 supersonic
- supersonics plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does supersonic mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Greater than the speed of sound (in the same medium, and at the same temperature and pressure).
supersonic jet
- 2
colloquialUltrasonic, having a frequency too high to be audible.
noun
- 1
An aircraft that can travel at the speed of sound.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Supersonic in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | supersonique |
| German | Überschall- , Überschallflugzeug |
| Portuguese | supersónico, supersônico |
| Spanish | supersónico |
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 supersonic come from?
From super- + sonic. Doublet of hypersonic.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).