完全清醒的用英语怎么说

完全清醒的用英语可以说成"completely sober"或"completely clear-headed"。
"Sober"这个词来源于古英语"sōber"，意思是"节制的，清醒的"。在现代英语中，它通常用来描述不醉酒或不嗑药的状态。
"Clear-headed"则是由形容词"clear"和名词"head"组合而成，意思是头脑清醒，思路清晰。
下面是一些例句：
He's completely sober now, after spending the night in jail.
She was completely clear-headed and made the right decision.
I'm trying to stay completely sober for the next month.
He had a headache and felt completely clear-headed