accelerate

verb
C1+
1
C1+
to happen faster or earlier; to make something happen faster or earlier
تسریع کردن, شتاب دادن, سرعت بخشیدن
2
C1+
to start to go faster
شتاب دادن, سرعت بخشیدن, سرعت گرفتن
The runners accelerated smoothly around the bend.
The car accelerated to overtake me.
The car purred into life and accelerated away.
opposite decelerate