active voice
form/set of forms of a verb where the subject is the person/thing performing the action and which can take a direct object
passive voice
form/set of forms of a verb where the subject undergoes the action of the verb
agentless passives
constructions used when the speaker or writer does not want to include a reference to an agent, can be used to deliberately manipulate an audience, frequently used in doublespeak and political rhetoric as a device to obfuscate, mislead, confuse, remove personal responsibility for actions