From the Old Norse, we received the adjective "scant" and the adverb "scantily." We make scanty use of either and, when we use them at all, we seem to use them in very narrowly defined situations. About the only place I see "scant" used is in cooking instructions, e.g. add a scant teaspoon of arsenic or dried bat wings or somesuch. About the only place I see "scantily" used is in reference to people (or women, more precisely) who are not wearing much, described as "scantily clad." Why is this?