Dictionary

waterfast en · ADJ

Etymology

From water + fast. Cognate with Scots wattirfast (“watertight”), West Frisian wetterfêst (“waterproof”), Dutch watervast (“waterproof”), German wasserfest (“waterproof”), Danish vandfast (“waterproof”), Swedish vattenfast (“waterproof”).

Meanings

1. watertight
2. waterproof
   • A waterfast sunscreen, in other words, a product that stays on well despite swimming or heavy perspiration, is also advisable. 2000, Nelson Novick M.D, Baby Skin:
   • If you spot paste, and your paper is waterfast, wipe at once with a damp cloth or sponge. If the paper is not waterfast, wipe with a dry cloth. 1953, August G. Lockwood, Norman E. Stanton, How to Finish Your Attic and Basement Yourself, page 166:

Forms