Synonyms of flatness
• Notice the flatness and the rich, red earth.
• the dull uniformity of the houses
• The lawn was rich, weed-free, and trimmed to smoothness.
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• the dullness of their routine life
dullnessbanalityflatnesslack of imaginationpointlessnessstalenesstamenessvapiditytritenesstediousnesscolourlessnessuninterestingness
monotonyThe monotony of something is the fact that it never changes and is boring.
• A night out may help break the monotony of the week.
Thesaurus for flatness from the Collins English Thesaurus