عَدَمُ ذِكْرِ الْمَفْعُولِ
Not stating the object in the utterance.
Two cases should be kept distinct:
1. The aim concerns action and agent alone. No particular object is meant, so the audience need not restore one.
2. A particular or general object is intended. Context shows that the action has a relevant object which has simply not been uttered. This raises questions of ellipsis and recovery.
In the first case a transitive verb is used, for this purpose, like an intransitive one. In the second, an omitted complement must be recoverable from evidence.