noun
ADJECTIVE
▪ deputy
▪ acting , caretaker , interim , transitional
▪ incumbent , present
▪ former , previous
▪ outgoing
▪ strong
▪ beleaguered ( esp. BrE )
▪
The beleaguered ~ is coming under more pressure.
▪ Conservative , Labour , etc.
VERB + PRIME MINISTER
▪ appoint , appoint sb (as) , elect , elect sb (as)
▪ serve as
▪
He served briefly as ~ from 1920 to 1921.
(For more verbs see the entry for minister .)
PREPOSITION
▪ under a/the ~
▪
She held office under two different ~s.