Argyr- is a prefix that has Greek origins and means silver. There are a few synonyms for this prefix that can be used in alternate contexts. One such synonym is "argento-" which also means silver in Italian and can be used in words like "argentometric" and "argentous". Another synonym is "argyrio-" which also means silver, and can be used in words like "argyriosis" and "argyriophilic". Finally, there is also the synonym "argyrite", which refers to a type of silver mineral and can be used in the scientific field of geology. All of these synonyms can be used to substitute for the prefix "argyr-" and add variation to a writer's vocabulary.