experimental
/ɪkspɛɹəˈmɛntəl/adjective, noun
experimental is spelled E-X-P-E-R-I-M-E-N-T-A-L: 12 letters and 5 syllables. It appears 19 times per million words in written English, the 4,444th most frequent word form (wordfreq, 2021 data). As an adjective, experimental means “Pertaining to or founded on experiment” (English Wiktionary, September 2026).
How many letters and syllables are in experimental?
| Letters | 12: E-X-P-E-R-I-M-E-N-T-A-L |
|---|---|
| Syllables | 5 (from its American pronunciation) |
| In writing | 19 times per million words; the 4,444th most frequent word form |
| Wrong spellings searched | none measured in search |
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).
How common is experimental?
Experimental appears 19 times per million words in written English, the 4,444th 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 experimental?
- /ɪkspɛɹəˈmɛntəl/
- /ɪkˌspɛɹəˈmɛntəl/
Experimental has 5 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)-Vealhurl-experimental.wav, Wikimedia Commons (author and licence on each file's page).
Forms of experimental
- more experimental comparative
- most experimental superlative
- experimentals plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does experimental mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Pertaining to or founded on experiment.
Chemistry is an experimental science.
- 2
Serving to be experimented upon; used in an experiment.
- 3
Serving as an experiment; serving to experiment.
his experimental band
- 4
Experiential, empirical.
experimental knowledge
noun
- 1
The subject of an experiment.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Experimental in Spanish, French, German and Portuguese
In the sense of or pertaining to an experiment:
| Language | Words |
|---|---|
| French | expérimental |
| German | experimentell |
| Portuguese | experimental |
| Spanish | experimental |
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 experimental come from?
From experiment + -al.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).