rainproof
/ˈɹeɪnpɹuːf/adjective, verb
rainproof is spelled R-A-I-N-P-R-O-O-F: 9 letters. It appears about once in every 56 million words in written English, the 234,209th most frequent word form (wordfreq, 2021 data). As an adjective, rainproof means “waterproof (for use outdoors); resistant to rain” (English Wiktionary, September 2026).
How many letters and syllables are in rainproof?
| Letters | 9: R-A-I-N-P-R-O-O-F |
|---|---|
| In writing | about once in every 56 million words; the 234,209th 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 rainproof?
Rainproof appears about once in every 56 million words in written English, the 234,209th 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 rainproof?
- /ˈɹeɪnpɹuːf/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-rainproof.wav, LL-Q1860_(eng)-Flame,_not_lame-rainproof.wav, Wikimedia Commons (author and licence on each file's page).
Forms of rainproof
- more rainproof comparative
- most rainproof superlative
- rainproofs present, singular, he/she/it
- rainproofing participle, present
- rainproofed participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does rainproof mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
waterproof (for use outdoors); resistant to rain
verb
- 1
To make rainproof.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does rainproof come from?
From rain + -proof.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).