Definition from Wiktionary, the free dictionary
forcible + -ly
- In a forcible manner, by force, against one's will.
- c. 1602, William Shakespeare, Troilus and Cressida, Act IV, Scene 4, 
- And suddenly; where injury of chance / Puts back leave-taking, justles roughly by / All time of pause, rudely beguiles our lips / Of all rejoindure, forcibly prevents / Our lock'd embrasures […]
- In a forcible manner, with force, with powerful effect, powerfully, strongly.
- 1839, Charles Dickens, Nicholas Nickleby, Chapter, 
- It was now cold, winter weather: forcibly recalling to his mind under what circumstances he had first travelled that road, and how many vicissitudes and changes he had since undergone.