Filial (adjective)

1. Relating to or befitting a son or daughter.
2. Owing respect, gratitude, or obedience to one's parents.

Origin:

Late middle english (in the sense "pertaining to a son"): from latin filialis, from filius "son".

Examples:

1. He had a strong sense of filial duty to his mother.
2. His filial love for his father was evident in the way he talked about him.
3. Filial piety is a traditional value in Chinese culture.
4. The filial relationship between a parent and a child is very important in many cultures.
5. He showed filial respect to his elders.