English ⇄ Russian

knock sharply stresses
gen.	резко стучать (clamorously, deliberately, accidentally, respectfully, irritably, thunderously, startingly, etc.); резко и т.д. стучать (clamorously, deliberately, accidentally, respectfully, irritably, thunderously, startingly, etc.); резко и т.д. ударять (clamorously, deliberately, accidentally, respectfully, irritably, thunderously, startingly, etc.); резко и т.д. бить (clamorously, deliberately, accidentally, respectfully, irritably, thunderously, startingly, etc.)
Makarov.	резко постучать; резко стучаться