Some risqué warmonger boring people (7)
I believe the answer is:
squares
This might be a double definition.
'some risque warmonger boring' is the first definition.
Although both the answer and 'boring' are nouns, they are not in the same form of the noun. However, I know that 'boring' relates to this answer.
'people' is the second definition.
Can you help me to learn more?
(Other definitions for squares that I've seen before include "Four-sided regular polygons" , "Letters go here" , "Equal-sided rectangles" , "Rectangle with four equal sides and four right angles" , "Spaces you fill in!" .)