Enter office uninvited? (5)
I believe the answer is:
usurp
'enter' is the definition.
Although both the answer and definition are verbs in their base form, I can't understand how they can define each other.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for usurp that I've seen before include "Depose illegally" , "Take power unlawfully" , "Take (power) by force or illegally" , "Expropriate" , "Appropriate without authority" .)