Crossword Genius

Raciness giving a girl a bit of oomph? (5)

Ross

I believe the answer is:

speed

I'm a little stuck... Click here to teach me more about this clue!

'oomph?' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Maybe there's a link between them I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for speed that I've seen before include "make rapid progress" , "Film sensitivity to light" , "Tempo - drug" , "Swiftness" , "Alacrity" .)

I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution? Install my app