No, the word strong is not an adverb.The adverb form of the word is strongly.
weakly
stronges
odour
magnetic
overreact
That is not an English word, and I strongly doubt that it is a word in any standard language.
The biggest word is 8 letters: strongly
to affect deeply or strongly in mind or feelings.
Throb
to dislike very strongly
Chrimas strongly suggests a misspelling of the word Christmas.