atávico

Adjective

 * 1)  atavistic of the recurrence of a trait after an absence of generations
 * 2) atavistic of a throwback
 * 3) atavistic of the return of earlier, more primitive behaviour
 * 1) atavistic of the return of earlier, more primitive behaviour
 * 1) atavistic of the return of earlier, more primitive behaviour

Etymology
From Latin, from +.

Adjective

 * 1) atavistic
 * 2) ancestral
 * 3) age-old
 * 1) age-old