Chinese words with 快 character meaning (HSK)

KUAI4
rapid, quick, speed, rate, soon, almost, to make haste, clever, sharp (of knives or wits), forthright, plain-spoken, gratified, pleased, pleasant

KUAI4, LE4
happy, merry

LIANG2, KUAI5
nice and cold, pleasantly cool

YU2, KUAI4
cheerful, cheerily, delightful, pleasant, pleasantly, pleasing, happy, delighted

GAN3, KUAI4
immediately, at once

JIN3, KUAI4
as quickly as possible, as soon as possible, with all speed

TONG4, KUAI4
overjoyed, delighted, happily, heartily, enjoying, also pr. tong4 kuai5

KUAI4, HUO5
happy, cheerful

SHUANG3, KUAI4
refreshed, rejuvenated, frank and straightforward