Simple past tense and past participle of disguise.(verb)
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Use "disguised" in a sentence
"In Scotland kids go guising (as in disguised) in amazing costumes and have to perform for their treats."
"I have other parts on two seperate USBs, in disguised files so no one can tell what they are without opening at least twenty documents."
"Contrast that to Bush, who is so cavilier about the lives of others that he actually contemplated sending American pilots up in disguised planes to try and trick Saddam into shooting them down so he could start his war."