Word: rainproof
Part of speech: Adjective
Syllables: rain
proof
Definition: waterproof (for use outdoors); resistant to rain
Morphemes:
Affix: rain
Language: en
PoS: Verb
Meaning: To have rain fall from the sky.
Affix: -proof
Language: en
PoS: Suffix
Meaning: Used to form adjectives denoting an impervious or impenetrable quality.