oomph

[ oo mf ]
/ ʊmf /

noun Informal.

energy; vitality; enthusiasm.
sex appeal.

Origin of oomph

An Americanism dating back to 1935–40; imitative of the sound made during exertion, as in lifting a heavy object
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British Dictionary definitions for oomph

oomph

/ (ʊmf) /

noun informal

enthusiasm, vigour, or energy
sex appeal

Word Origin for oomph

C20: perhaps imitative of the bellow of a mating bull
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012