What does it mean when a language is described as weakly typed?

A language described as weakly typed allows for some level of type coercion, meaning that it can automatically convert between different data types as necessary. In weakly typed languages, the strictness of data types can vary, and operations involving mismatched data types may still produce valid results after implicit conversions. This flexibility can facilitate easier coding since developers do not need to explicitly define or convert types in many situations.

For instance, if a weakly typed language allows a string to be added to a number, it might automatically convert the number to a string or vice versa, leading to a result without any errors. This contrasts with strongly typed languages, where such operations are often not permitted unless types are explicitly converted by the programmer.