Simple past tense and past participle of design.(verb)
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Use "design'd" in a sentence
"Mankind had perverted the Use of those Places design'd for a general"
"Remorse would not permit him to conceal any-thing; but he freely and openly own'd, That he and his Son design'd to murder the young Ladies, and so become Lords of their Inheritance."
"Genius that attends thee; and, I am sensible, out of a true design'd"