Demand from assassins is threat (6)

I believe the answer is:

insist

'demand' is the definition.
(thesaurus)

'from assassins is threat' is the wordplay.
'from' indicates a hidden word.
'INSIST' can be found hidden inside 'assassins is threat'.

(Other definitions for insist that I've seen before include "'Demand, make sure (6)'" , "Assert firmly" , "Declare or demand emphatically" , "Press" , "Demand firmly" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.