Simple past tense and past participle of crimson.(verb)
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Use "crimsoned" in a sentence
"Helena studies a deeply crimsoned rose, almost unnaturally so, and takes a long, wary look at the protruding thorns."
"Kahlil had crimsoned and was gesturing frantically with his hands."
"Around me sat color in human flesh—brown that crimsoned readily; dim soft-yellow that escaped description; cream-like duskiness that shadowed to rich tints of autumn leaves."