Somewhat bright; having qualities of brightness to a moderate degree, or appearing relatively bright when compared to darker surroundings.
From bright plus -ish, a suffix forming adjectives meaning 'somewhat' or 'rather.' The -ish suffix can soften or moderate the meaning of adjectives, creating intermediate categories (like reddish for something between red and not-red).
The suffix -ish is English's favorite way to express uncertainty—'brightish' is brilliantly vague, perfect for describing something you can't quite categorize, which is why people use it constantly in casual speech to avoid committing to a specific description.
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