Oomph is a 5 letter English word. It's valid Scrabble word worth 12 points. It's valid Words with friends word worth 13 points.
You can make 39 anagrams from letters in oomph (hmoop).
An Americanism dating back to 1935-40; imitative of the sound made during exertion, as in lifting a heavy object
All the oomph in the U.S. economy was delivered by the top 10% of households.
About the only remarks that could be elicited from the "little yaller man" were a reluctant "oomph" or "oomph-uh."
Then a look of intelligence came into mammy's fat face, "oomph," she said.
Any good Baby Boom boy my age can testify that the oomph went out of American family car design in 1963.