Last word of a hymn (4)

I believe the answer is:

amen

(Other definitions for amen that I've seen before include "Religiously 11 [THE LASTWORD]" , "Churchgoer's assent?" , "Extremist" , "I agree!" , "Prayerful last word" .)

I've seen this clue in the Newsday.com and the Newsday.

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