Somewhat strange cards? (5)
I believe the answer is:
rummy
'somewhat strange' is the definition.
'rummy' can be an answer for 'strange' (synonyms). I am unsure of the 'somewhat' bit.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rummy that I've seen before include "Card game; strange; like a spirit" , "Peculiar - card game" , "Set, sequence card game" , "Odd; card-game" , "with an alcoholic taste?" .)