noun
a person who refuses, denies, or opposes, esp. because of cynicism or pessimism. They went ahead with their ambitious plan despite the arguments of the naysayers.
1. on a tree, branches or sections of trunk that are dead. example:We should trim the deadwood on that tree.
2. unproductive persons or burdensome things that hinder the smooth function or progress of an enterprise. example:The new manager’s first task was to get rid of the deadwood among the workers.