makunbound
symbol => symbol
symbol—a symbol
Makes the symbol be unbound, regardless of whether it was previously bound.
(setf (symbol-value 'a) 1) (boundp 'a) => true a => 1 (makunbound 'a) => A (boundp 'a) => false
The value cell of symbol is modified.
Should signal an error of type type-error if symbol is not a symbol.