respondent

noun

1. a person who responds or makes reply.
2. Law. a defendant, especially in appellate and divorce proceedings.

adjective

3. giving a response; answering; responsive.
4. Law. being a respondent.
5. Psychology. of or relating to behavior that occurs consistently in response to a particular stimulus.
6. Obsolete. corresponding.

noun

1. law a person against whom a petition, esp in a divorce suit, or appeal is brought

adjective

2. a less common word for responsive