Synonyms of the word 
NEGOTIATOR → COMMUNICATOR - NEGOTIANT - TREATER
negotiator
- n. One who negotiates.
- n. A diplomat, moderator.
communicator
- n. Someone who, or something that communicates.
- n. Any of several electronic devices that allow people with various disabilities to communicate via displays…
negotiant
- n. A negotiator.
treater
- n. Anything that treats.
- n. A vessel used to treat oil-water emulsions by any of several mechanisms so that the oil can be accepted…
If you are interested in words, visit the following sites :
- wiktionary.org/negotiator For complete definition of a word
- 1word.ws/negotiator to play with words, suffixs, prefixs, etc.