Not presumptious; unpretentious; simple; humble.(adjective)
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Use "unpresuming" in a sentence
"It all ended up being way, way neater than I expected, despite its unpresuming appearance."
"She was slighted by her father and the servants, and bullied by her brother; and was only just enabled, by humble, unpresuming disposition, to carry on her tedious life from year to year without grumbling."
"In a little unpresuming building in Marietta, Georgia lies the weirdest four hours of a Friday night you will ever spend."