Superlative form of starchy: most starchy.(adjective)
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Use "starchiest" in a sentence
"The slightest progressive wrinkles of even the starchiest corporate Democrats have been ironed out by media steamrollers."
"It doesn't sound like a cheerful topic, and I don't suppose that is is, but it's a beautiful story beautifully told by young men in the starchiest and stuffiest school uniforms who whip out handheld microphones to sing their innermost thoughts, and the young women in long dresses who find something stirring but know not what."
"For when only the starchiest of starches will do ... but you'd rather not work too hard."