What does 迅速 (xùn sù) mean in English?

Card 1109HSK 2010 Level 51109/1311
CARD1109
PROGRESS85%
迅速
xùn sù
rapid; speedy; fast

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d