する(きぜつする) To faint due to shock or surprise, as when I tell you that you have a long-lost identical twin in North Korea.   $$$
(そっとう) To lose consciousness: in a car crash, or when I kick you.
(うすい) Faint, weak, (watery tea, faint light of dawn)
(あわい) Also means faint, but 淡い carries the connotation of, it’s faint because it’s weak or sickly. Fleeting. The faint light of the last bit of sunset.