Comparative form of staunch: more staunch(adjective)
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Use "stauncher" in a sentence
"Mr. Kiwanuka, who is 6-foot-5 and 265 pounds, is generally viewed as being stauncher against the run than the 6-foot-3, 261-pound Mr. Umenyiora."
"If Mary, who was a staunch Catholic, married Philip, who was even stauncher, the Catholic hold on England would be secure again."
"Future Games was doing great in the States and we were getting top billing at the Fillmore East (where Van Morrison opened for us) and had broken house records for sellouts in some of our stauncher venues."