What's the opposite of a pejorative suffix?

In many languages, the way to express a positive attitude is to use a 'diminutive' which is used more often for terms of endearment rather than denoting a small size. Conversely, in languages that have an augmentative, it is often used to express pejorative.

As is so often the case in language, these terms are not really symmetrical along some imaginary scale. A language may have a very complex system of diminutives with only the most rudimentary augmentatives or no augmentatives at all. Also, both diminutives and augmentatives can be used for positive and negative evaluation.