I'd prefer animose which is a word of sorts

"animose" gives you the 'spirit', jheem, without the 'animosity' which informs that spirit.

It seems to me a good coinage must be transparent. One ought to be able to read the meaning from the word itself. "Animous" gives no hint of "animosity" whereas "animositous" is utterly transparent and self-evident.

"animous" may be a good alternative for "animus", if such an alternative was required, but it does not begin to fill the vaccuum neatly filled by "animositous", in my respectful opinion.