醒
セイ, さ.ます, さ.める

awake, be disillusioned, sober up

JLPT0 G7 S16 F5000

As per 星# (invigorating) + 酉 alcohol → invigorating tonic that allows one to wake/sober up → *wake up*; *sober up*; *open one's eyes*; *see clearly*.

[Full Kanji Etymology List]