Capone and Eisenhower similar? (5)
I believe the answer is:
alike
'similar?' is the definition.
('alike' can be a synonym of 'similar')
'capone and eisenhower' is the wordplay.
'capone' becomes 'Al' (gangster Al Capone).
'and' means one lot of letters go next to another.
'eisenhower' becomes 'Ike' (Ike was a nickname of President Dwight Eisenhower).
'al'+'ike'='ALIKE'
(Other definitions for alike that I've seen before include "Share and share . . . . . - even Stephen" , "Undistinguished" , "Dull pain" , "Equally" , "In a similar way" .)