IPA: /ˈtɑːrnɪʃəbl/
KK: /ˈtɑrnɪʃəbl/
Able to lose its shine or luster, often due to exposure to air or moisture.
The silverware is tarnishable if not properly stored.
Tarnishable → It is formed from "tarnish" (from Old French *etarnir*, meaning to make dull or lose luster) and "-able" (meaning capable of). The word "tarnishable" means capable of being made dull or losing luster.
Think of something that can become dull or lose its shine — that's what tarnishable means.