What is the opposite meaning of ursine?

Ursine means bear-like.

So what is the opposite of a bear?...Um... a ball-point pen? Or maybe a thunderstorm?

Not really! Perhaps we could say 'NOT ursine'! But that doesn't help much, because something that is not something is not necessarily the opposite of it.

Someone might be tall, but is someone who is 'not tall' necessarily short? Of course not!

But 'short', ah...that would be a logical opposite of 'tall'.

So then, what is the opposite of bear-like? Probabaly we just have to admit that some things just don't have opposites!