I got this sentence from Swan's book:

I must get my jacket cleaned. I'd better have my raincoat reproofed.

I assume the word reproofed is a past participle of reproof, judging by its structure and pattern of its vowels and consonants. I've been searching this word on website, but haven't found a single mention about it. Is it really a word?

Although, it's available on some well-known dictionaries such as Collin, Cambridge, M-W, Dictionary, and Oxford, it is a noun they provide. Those dictionaries are only my best resources when I don't know the meaning of a word. Do you know what does that word mean? Is it commonly used?

  • For future reference when you find a puzzling verb starting re try looking up the word minus re and see what happens.
    – mdewey
    Oct 4, 2021 at 16:06
  • Yes, in this context, it's "re + proofed" rather than "reproof + ed".
    – gotube
    Oct 4, 2021 at 18:12

1 Answer 1


Reproof (noun) means 'an expression of blame or disapproval'. The verb is 'reprove' (to deliver such an expression to someone).

To 'reproof' or 're-proof' a waterproof item (e.g. a tent, coat, etc) is to re-apply a waterproof coating or treatment that was previously present but which has become old or worn and no longer keeps out the rain. You can buy a can or bottle of the substance or take the item to be re-proofed to the kind of shop that does dry-cleaning. The term is commonly used.

re-proof (riːˈpruːf) vb (tr)

  1. (Clothing & Fashion) to treat (a coat, jacket, etc) so as to renew its texture, waterproof qualities, etc

Re-proof (The Free Dictionary)

  • Sometimes you put a coat in the washing machine on a cold wash cycle and use the special liquid instead of detergent. Usually it smells quite unpleasant. Oct 4, 2021 at 16:07

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