Simple past tense and past participle of kink.(verb)
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Use "kinked" in a sentence
"Saw one of these in my backyard- when I walked back there it froze in a 'kinked' position a little more extreme than the photo."
"The idea is that firms face a kinked demand curve (more elastic for price increases than for price cuts), because consumers search when they see a price increase, but not when they see stable prices."
"Furthermore, you only get this kinked setup for some kinds of price changes, i.e. when you are the only one adjusting."