Both Uses of
sufficient
in
I Have a Dream
- Instead of honoring this sacred obligation, America has given the Negro people a bad check, a check which has come back marked "insufficient funds."†
- We refuse to believe that there are insufficient funds in the great vaults of opportunity of this nation.
*insufficient = not adequatestandard prefix: The prefix "in-" in insufficient means not and reverses the meaning of sufficient. This is the same pattern you see in words like invisible, incomplete, and insecure.
Definition:
-
(sufficient) adequate (enough -- often without being more than is needed)