saber
know
savvy
knowledgeable
+
-er
verb suffix
Saber means to know and can be remembered as savvy0 (knowledgeable0) + -er1 (verb suffix1), connecting the idea of being knowledgeable with the act of knowing.
verb
  1. know
    To know information or facts
    ¿Sabes la respuesta? // Do you know the answer?
  2. know how
    To know how to do something
    Sé hablar tres idiomas. // I know how to speak three languages.