Dictionary.com
definitions

-proof

a combining form meaning “resistant, impervious to” that specified by the initial element: burglarproof; childproof; waterproof.

RELATED CONTENT

Assume vs. PresumeThe words assume and presume both mean that you take something for granted as being true, but the difference is based on how certain you are. Assume is typically used in situations where someone takes something as the truth with a very low level of certainty or with no proof at all. Presume usually involves a higher level of certainty and is used in situations …
READ MORE
Tuesday Is Named For A One-handed God Named TiwYes, it’s true, there’s a wild story behind the god who lends his name to Tuesday. Tiw’s remarkable myth involves women with beards (more on that in a bit). Regardless, the past 1,000 years or so have not been kind to this Northern European divinity. Who is Tuesday named for? To make a long story short, it seems that Tiw used to be a big shot, …
READ MORE

Nearby words

  1. -poiesis,
  2. -poietic,
  3. -polis,
  4. -pounder,
  5. -prone,
  6. -pter,
  7. -pterous,
  8. -ptosis,
  9. -rama,
  10. -re
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for -proof

-proof

adjective, combining form

secure against (damage by); (make) impervious towaterproof; mothproof; childproof

Word Origin for -proof

from proof (adj)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012