Hardly uncommon? (6)
I believe the answer is:
scarce
I believe this is a double definition.
'hardly' is the first definition.
(I know that hardly can be written as scarce)
'uncommon?' is the second definition.
(scarce means rare or uncommon)
(Other definitions for scarce that I've seen before include "Not plentiful, hard to find" , "Uncommon" , "Not often come across" , "Like gold dust" , "Hard to get" .)