快感

快感	kuài gǎn	pleasure / thrill / delight / joy / pleasurable sensation / a high
快	kuài	rapid / quick / speed / rate / soon / almost / to make haste / clever / sharp (of knives or wits) / forthright / plainspoken / gratified / pleased / pleasant
感	gǎn	to feel / to move / to touch / to affect / feeling / emotion / (suffix) sense of ~