American Heritage Dictionary
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Century Dictionary
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GNU Webster's 1913
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WordNet
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Elsewhere on the web
Sam Donaldson really smacks down the ever-unctuous (and historically inaccurate)— Crooks and Liars
The lawyer spoke little; when he did his voice was rich and unctuous--the sort of voice that Ishmael always described to himself as "porky."— Secret Bread
The earth was black and unctuous, and bubbling under the feet, left no track behind.— The Hill of Dreams
The movement was large and unctuous, and it impressed Kate considerably I took the liberty to stop, for you seemed so interested that I felt curious to know what could be worth looking at in those chimneys and cinder-mounds I wasn't looking at the factories, but at the hills.— A Mummer's Wife

American Heritage Dictionary (1)
Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.
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