This is the 2333rd most frequent Spanish word.
siga
"Siga" means "continue" or "go ahead" (command form of "seguir").
Here, 'siga' is used as a formal command in the imperative mood, directed at someone to proceed forward.
Por favor, siga adelante.
Please, continue forward.
In this sentence, 'siga' expresses a wish or expectation in the subjunctive present tense.
Espero que siga mejorando.
I hope you continue improving.
Here, 'siga' appears in the form 'sigue,' which is the indicative present tense, indicating an ongoing action.