quword 趣词
Word Origins Dictionary
- child-proof (adj.)



[child-proof 词源字典] - 1933, from child (n.) + proof (n.). As a verb by 1951.[child-proof etymology, child-proof origin, 英语词源]
- fool-proof (adj.)




- also foolproof, 1902, American English, "safe against the incompetence of a fool," from fool (n.1) + adjectival sense from proof (n.).
- sound-proof (adj.)




- 1853, from sound (n.1) + proof (n.).
- gas-proof (1)




- "Impermeable to (especially poisonous) gas; gas-tight", Mid 19th cent.; earliest use found in Boston Daily Atlas. From gas + proof.
- gas-proof (2)




- "To make (an enclosure, material, etc.) gas-proof", Mid 19th cent. From gas-proof.
- cold-proof




- "Offering resistance against cold", Early 19th cent..