knock against collide violently with an obstacle
antagonist someone who offers opposition
protagonist the principal character in a work of fiction
go against resist
agnostic a person who claims the existence of God is unknowable
knock-kneed having the knees abnormally close together and the ankles wide apart
cognizant having or showing knowledge or understanding or realization
incognito without revealing one's identity
lean against rest on for support
butt against lie adjacent to another or share a boundary
knockwurst short thick highly seasoned sausage
jar against collide violently with an obstacle
incognizant (often followed by `of') not aware
recognized generally approved or compelling recognition
recognised provided with a secure reputation
unorganised not having or belonging to a structured whole
tobogganist someone who rides a toboggan
knock-knee an inward slant of the thigh
organist a person who plays an organ
unbeknownst occurring or existing without the knowledge of