The quality of being grand; impressive magnificence, impressiveness, or scale in appearance or manner.
From grand (from Old French grant, from Latin grandis meaning 'great' or 'large') plus -ness, the suffix creating abstract nouns from adjectives. This word has existed in English since the 1600s.
The grandness of a building can actually trick your brain—studies show that high ceilings and large spaces make people feel more creative and confident, so the word's meaning connects to real psychological effects!
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