Which languages have a marker of the comparative degree of adjectives that coincides with a marker of a low degree? ...or which has evolved from such a low degree marker?
(A message asking for the list of such languages was originally posted by Lisa Bylinina at this internet page, check in Russian, under number 1.)
Another term that has been used for these "low degree markers" could be attenuative, cf. Boguslavsky,Iomdin(2009) in "Semantics of Attenuated Comparatives in Russian" on the Russian words with po-
we will henceforth refer to them as attenuatives, following Igor Mel’čuk(1998).
In fact, this "whole story about low degrees and comparison grew out of Russian po-, and the role it plays in comparative construction, but the really striking fact about Bulgarian is that po- there has nothing to do with low degree anymore at all. It is just the default (and the only? don't remember) comparative marker in Bulgarian".