tarnishing's Usage Examples:

tarnishing when working with silver or imitation gold, or rub talcum powder on your hands.

The process will probably be abandoned as soon as the tarnishing of the metal during rolling and annealing can be avoided.

Although many silver items are made with some platinum alloy, which guards against tarnishing, other items will have to be polished from time to time.

It exhibits considerable lustre and is not subject to tarnishing on exposure to normal air.

Most sterling silver jewelry will have a coating of a lacquer to protect it from tarnishing.

Protect your metal and sterling silver chunky jewelry from tarnishing too soon.

Wear cotton gloves when handling to avoid tarnishing when working with silver or imitation gold, or rub talcum powder on your hands.

The mineral is especially liable to surface alteration, tarnishing with beautiful iridescent colours; a blue colour usually predominates, owing probably to the alteration of the chalcopyrite to covellite (CuS).

In the jewelry world, platinum is considered to be more valuable than gold because of its resistance to wear and tarnishing.

Synonyms:

sully, spot, blot, darken, maculate, blob, defile, fleck, stain,

Antonyms:

lighten, stay, clear up, brighten,