outflow
noun, verb
outflow is spelled O-U-T-F-L-O-W: 7 letters and 2 syllables. It appears 1.0 times per million words in written English, the 28,556th most frequent word form (wordfreq, 2021 data). As a noun, outflow means “The process of flowing out” (English Wiktionary, September 2026). The plural of outflow is outflows.
How many letters and syllables are in outflow?
| Letters | 7: O-U-T-F-L-O-W |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | 1.0 times per million words; the 28,556th 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 outflow?
Outflow appears 1.0 times per million words in written English, the 28,556th 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 outflow?
- US
Outflow has 2 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-outflow.wav, Wikimedia Commons (author and licence on each file's page).
Forms of outflow
- outflows plural, present, singular, he/she/it
- outflowing participle, present
- outflowed participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does outflow mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The process of flowing out.
- 2
A fluid that flows out.
- 3
Any outward movement.
- 4
A stream of gaseous material emanating from an active galactic nucleus.
- 5
The part of a system that allows material to flow out.
- 6
Something that flows out of a sewage treatment plant.
verb
- 1
To flow outward.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Outflow in Spanish, French, German and Portuguese
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 outflow come from?
From Middle English outflowen, from late Old English ūtflōwan (attested in the past tense as ūt flēow), equivalent to out- + flow. The noun is derived from the verb.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).