A dynamically typed language is a type of programming language where variable types are determined at runtime rather than at compile time. This means that you can assign different types of values to the same variable during the execution of a program. For example, in a dynamically typed language like Python, you can first assign an integer to a variable and later assign a string to the same variable without any errors. This flexibility allows for quicker coding and easier prototyping, as developers do not need to explicitly declare variable types. However, it can also lead to runtime errors if a variable is used in an unexpected way. Languages such as JavaScript and Ruby are also examples of dynamically typed languages.