Passive aggression.
Circumlocutory is good if you're talking about verbal communication. Depending on context, some other good words would be indirect, evasive, confusing, ambiguous, or obscure.
The plural for hostility is hostilities.
Open Hostility was created in 1991.
Antonyms for hostility are likability, friendliness or amiability.
The abstract noun for the adjective hostile is hostility.
The act of intimating; also, the thing intimated., Announcement; declaration., A hint; an obscure or indirect suggestion or notice; a remote or ambiguous reference; as, he had given only intimations of his design.
the warriors showed hostility to the neighbouring tribe.
yes. example: She shows hostility towards her brother.
If two people are "at each others' throats" there is hostility between them.
The word "hostility" does not have a prefix or suffix. It is a standalone word.
of Obscure
obscure means dark