Comparative form of polite: more polite(adjective)
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Use "politer" in a sentence
"His Sunday column gives the Governor's decision its due derision, in politer terms appropriate for a family newspaper."
"I call back the account manager, and ask, in politer terms of course, what the hell is going on here."
"This may or may not usher in a new era of smaller, more efficient government, politer disagreement, and more general fist-pumping in delight at living in America, but it certainly was a speech to remember."