Dynamic and compiled are not mutually exclusive. Objective-C is both a dynamic and compiled (to machine code) language that supports monkey patching. It supports extending classes with new methods and overriding existing methods in existing classes through its category feature.

This does have an unfortunate side effect though. Because Objective-C is a) compiled directly to machine code b) has no way of marking methods final and c) supports monkey patching, essentially no methods can be inlined by the compiler.