He went out in the rain and came back thoroughly drenched.
More Examples
Used in the Middle of Sentence
Not to rub it in, but I'm working from home. So I took a swim this morning and have thoroughly been enjoying the beautiful weather
This may be called milieu control. The Chinese Communist prison is probably the most thoroughly controlled and manipulated group environment that has ever existed.
A haymishe but thoroughly regressive, look at dilemmas past.
Meaning of thoroughly for the defined word.
Grammatically, this word "thoroughly" is an adverb. It's also a morpheme, more specifically, a suffixe.