Somewhat resembling copper in color, appearance, or quality; having a coppery or metallic reddish-brown tone.
Formed from copper plus the -ish suffix, which softens or makes something "somewhat like" the root word; common in English descriptive adjectives.
The -ish suffix is one of English's most flexible word-building tools—you can add it to almost any adjective or noun to indicate 'somewhat like' that thing, which is why copperish can apply to colors, flavors, or even personalities!
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