vavoom
/vaˈvuːm/(also va-va-va-voom, va-va-voom) informal (originally US )
exclamation
Expressing admiration for something regarded as excitingly appealing, especially a woman's curvaceous figure.
adjective
Of a woman: voluptuous; curvaceously sexy.
noun
Vigour, sex-appeal; oomph.
Origin
1950s. Imitative of the sound of an engine being revved.