Crossword Genius

I'm included in an American hostility (6)

Ross

I believe the answer is:

animus

'hostility' is the definition.
(I know that animus is a type of hostility)

'i'm included in an american' is the wordplay.
'included in' means one lot of letters goes inside another.
'american' becomes 'US' (abbreviation for United States).
'an'+'us'='anus'
'im' placed inside 'anus' is 'ANIMUS'.

(Other definitions for animus that I've seen before include "Malicious ill-will" , "Hostile spirit in speech or action" , "spirit of hostility" , "Hostile feeling" , "Motivating spirit" .)

I've seen this clue in The Globe and Mail.
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