This is the 4187th most frequent Spanish word.
legal
Permitted by law; lawful.
In this sentence, 'legal' is used as an adjective to denote compliance with the law or regulations.
Es importante asegurarse de que toda tu documentación esté en regla para ser completamente legal.
It's important to ensure that all your documentation is in order to be completely legal.
Here, 'legal' is again an adjective used to describe the binding power of the contract under the law.
El contrato firmado entre ambas partes es completamente legal.
The contract signed between both parties is completely legal.
In this instance, 'legal' serves as an attribute referring to matters pertaining to law or legality.