underfill
verb
underfill is spelled U-N-D-E-R-F-I-L-L: 9 letters. It appears about once in every 69 million words in written English, the 262,293rd most frequent word form (wordfreq, 2021 data). As a verb, underfill means “To fill with an insufficient amount” (English Wiktionary, September 2026).
How many letters and syllables are in underfill?
| Letters | 9: U-N-D-E-R-F-I-L-L |
|---|---|
| In writing | about once in every 69 million words; the 262,293rd most frequent word form |
| Wrong spellings searched | none measured in search |
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).
How common is underfill?
Underfill appears about once in every 69 million words in written English, the 262,293rd 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 underfill?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-underfill.wav, Wikimedia Commons (author and licence on each file's page).
Forms of underfill
- underfills present, singular, he/she/it
- underfilling participle, present
- underfilled participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does underfill mean?
The meanings the English Wiktionary records, quoted as written there (source below).
verb
- 1
To fill with an insufficient amount.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does underfill come from?
From under- + fill.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).