"hostilities" in the noun sense
1. hostility, ill will
a hostile (very unfriendly) disposition
"the outbreak of hostilities"
"he could not conceal his hostility"
2. hostility, enmity, antagonism
a state of deep-seated ill-will
3. hostility, enmity, ill will
the feeling of a hostile person
"he could no longer contain his hostility"
4. aggression, hostility
violent action that is hostile and usually unprovoked
Source: WordNet® (An amazing lexical database of English)
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