Using “Tamer” vs. “More Tame”
“More tame” is the correct phrase in standard usage. “Tame” is the base adjective, and “more tame” functions as the comparative form meaning “most tame” or “less wild.” While “tamer” exists as a comparative, it is less commonly used and can sound awkward in many contexts.
When in doubt, “more tame” is the safer and more widely accepted choice.