Sinister order in America enshrines nothing (7)
I believe the answer is:
ominous
'sinister' is the definition.
(synonyms)
'order in america enshrines nothing' is the wordplay.
I cannot really see how this works, but
'order' could be 'om' (Order of Merit) and 'om' is found in the answer.
'in' is within the answer.
'america' could be 'us' (United States) and 'us' is located in the answer.
'nothing' could be 'o' (looks like zero - 0) and 'o' is located in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ominous that I've seen before include "Portentous" , "US moon I find threatening" , "Looking like trouble ahead" , "Boding ill" , "Not looking good, dark clouds ahead" .)