ENGLISH · A WORD WITH POSSIBILITIES

rainproof.

waterproof (for use outdoors); resistant to rain

9 characters2 syllables approx.English language

Meaning & usage

adj/ˈɹeɪnpɹuːf/

waterproof (for use outdoors); resistant to rain

Where this word comes from

Etymology tree Proto-Indo-European *Hréǵʰ-der. Proto-Indo-European *Hréǵʰnos? Proto-Germanic *regną Proto-West Germanic *regn Old English reġn Middle English reyn English rain English proof English -proof English rainproof From rain + -proof.

verb/ˈɹeɪnpɹuːf/

To make rainproof.

Where this word comes from

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.