assume

/əˈsjuːm/ verb [T]

Definition

› to think that something is likely to be true, although you have no proof: [+ (that)] Everything was quiet when I got home so I assumed that you had gone out.

assume control/power/responsibility, etc › to take a position of control/power/responsibility, etc: He has assumed the role of spokesman for the group.

assume an air/expression, etc formal › to pretend to have a feeling that you do not have

assume a false identity/name, etc › to pretend to be someone else: an assumed name

(Definition of assume verb from the Cambridge Learner's Dictionary © Cambridge University Press)