underside
/ˈʌndɚˌsaɪd/noun
underside is spelled U-N-D-E-R-S-I-D-E: 9 letters and 3 syllables. It appears 1.7 times per million words in written English, the 21,209th most frequent word form (wordfreq, 2021 data). As a noun, underside means “The side that is below or underneath, the bottom” (English Wiktionary, September 2026). The plural of underside is undersides.
How many letters and syllables are in underside?
| Letters | 9: U-N-D-E-R-S-I-D-E |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 1.7 times per million words; the 21,209th 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 underside?
Underside appears 1.7 times per million words in written English, the 21,209th 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 underside?
- UK /ˈʌndəˌsaɪd/
- US /ˈʌndɚˌsaɪd/
Underside has 3 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)-Flame,_not_lame-underside.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with underside?
No other word on PlainSpell ends in the same sounds as underside (/ʌndəɹsaɪd/).
Spelled with the same letters in another order: undesired.
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 underside
- undersides plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does underside mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The side that is below or underneath, the bottom.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Underside in Spanish, French, German and Portuguese
In the sense side that is underneath:
| Language | Words |
|---|---|
| German | Unterseite |
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 underside come from?
From under- + side.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).