Oxidation or discoloration, especially of a decorative metal exposed to air.
1918, Hannah Teresa Rowley, Mrs. Helen Louise (Wales) Farrell, Principles of Chemistry Applied to the Household Precipitated calcium carbonate, a very fine powdery form, is used as a basis for many tooth powders and pastes. As whiting it finds a wide use in cleaning metals of their tarnishes.
To oxidize or discolor due to oxidation.
Careful storage of silver will prevent it from tarnishing.
To compromise, damage, soil, or sully.
From Middle English ternysshen, from Old French terniss-, stem of ternir (“to make dim, make wan”), borrowed from Old High German *ternen, tarnen, from Proto-West Germanic *darnijan (“to conceal”). Do...
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He is afraid that she will tarnish his reputation if he disagrees with her.
To lose its lustre or attraction; to become dull.
Till thy freſh Glories, which now ſhine ſo bright, / Grow Stale and Tarniſh with our dayly ſight.