fix (schnell)

listen to the pronunciation of fix (schnell)
German - English
pronto
Quickly, soon, promptly

I need to finish this assignment pronto.

If you say that something must be done pronto, you mean that it must be done quickly and at once. Get down to the post office pronto! = sharpish. quickly or immediately (promptus; PROMPT)
(Slang) fast, quickly, swiftly, rapidly; immediately, right now, promptly
in a punctual manner; "he did his homework promptly"