CLOS is verbose if all you're doing is encapsulating some state. If, on the other hand, you plan on doing anything remotely interesting, it's very succinct and expressive. Trying to emulate the functionality of CLOS' multiple dispatch and mixins in Java or C++ is hell beyond hell.
As for verbosity, I'll take ":accessor foo" over methods "getFoo" and "setFoo" with inane, useless autogenerated comments any day of the week.
As for verbosity, I'll take ":accessor foo" over methods "getFoo" and "setFoo" with inane, useless autogenerated comments any day of the week.