Atavistic (adjective)

1. Relating to, or resembling an ancestor or ancestors; ancestral or primitive.
2. Relating to a recurrence or reversion to an earlier, ancestral type or mode of behavior or characteristics.

Origin:

From the latin word 'atavus' meaning 'ancestor'.

Examples:

1. His atavistic tendencies were evident in his love for hunting and fishing.
2. The atavistic design of the building was inspired by ancient Egyptian architecture.
3. The atavistic behavior of the group was characterized by their strong sense of community and their reliance on ancient rituals.
4. Her atavistic vision of the future was rooted in her belief in the importance of preserving tradition.
5. The atavistic dance was a modern interpretation of traditional tribal rituals.