This is the 8189th most frequent French word.
vayas
"Vayas" is not a French word; it appears to be Spanish, meaning "you go" (present subjunctive of "ir").
The word 'vayas' is used as the subjunctive form of 'to go' (aller) in the present tense, here implying a hypothetical or desired action.
Je veux que tu vayas au marché pour acheter des légumes.
I want you to go to the market to buy vegetables.
The word 'vayas' appears in the context of a subjunctive mood, triggered by the expression of importance or necessity ('Il est important que').
Il est important que tu vayas chez le médecin cette semaine.
It is important that you go to the doctor this week.
Here, 'vayas' in the subjunctive mood follows 'bien que', a conjunction that introduces a concessive clause requiring the subjunctive.