International body’s hostility having secured nothing like complete agreement (9)

I believe the answer is:
unanimous
'international body's hostility having secured nothing like complete agreement' is the definition.
I can't tell whether this defines the answer.
'international body's hostility having secured nothing' is the wordplay.
'international body' becomes 'UN' (short for United Nations).
'hostility' becomes 'animus' (animus is a kind of hostility).
'having secured' indicates putting letters inside.
'nothing' becomes 'O' (looks like zero - 0).
'animus' going around 'o' is 'animous'.
'un'+'animous'='UNANIMOUS'
Can you help me to learn more?
(Other definitions for unanimous that I've seen before include "Acting together" , "As one voice" , "Agreed by all, nem con" , "in complete agreement" , "Without one dissenter" .)
