recuse, stump,

recuse: ~를 관여하지 않도록 하다.
to say that a judge or a member of a jury should not be involved in a trial because they havea special interest in its final result :
He will have to recuse himself from that hearing.
Comey's public comments came after Attorney General LorettaLynch announced that she would recuse herself of deciding whether toprosecute Clinton and would merely act upon the recommendation of theFBI. --------------------------------------------------------------------------stump
the part of a tree, arm, etc. that is left afteranother part has been removed.

[T] to confuse or cause someone tobe unable to understand or explain something:
He seemed stumped by our questions.
I'm completely stumped - how did she manage to escape?
Scientists are stumped by this mystery virus.

• stump verb (SPEAK)

 [I] to talk in support of a politician or idea.
Taylor stumped for him throughout the state.