The phrase "jumps down throat" refers to someone who is being overly critical or aggressive in their communication. Antonyms for this phrase could include words like "gentle", "diplomatic", and "tactful". A person who is gentle in their communication will not attack or criticize someone else. A diplomatic person will use careful language to avoid offending others, while a tactful person will try to find common ground and a mutually agreeable solution. Other antonyms for "jumps down throat" might include "patient", "understanding", "kind", and "considerate". All of these words describe qualities that are essential in any successful relationship or communication.