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Man with no frills (American) a plain person, a man without culture or refinement. An amiable term to express a vulgar fellow. [Albert Barrere and Charles G. Leland, "A Dictionary of Slang, Jargon & Cant," Ballantyne Press, 1890]
Restricted to the essentials; without frivolous ornamentation or flourishes: Imagine a no-frills warehouse crossed with an abattoir (1960+)