Simple past tense and past participle of panel.(verb)
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Use "panelled" in a sentence
"The walls were relieved with bands of blue and white bunting in panelled effects."
"I had heard from Marmaduke Bannerworth some slight allusion to concealing the money behind a picture that was in a bed-room called the panelled chamber."
"When we moved in to this house eight years ago the hall, to our complete mystification as to why, was "panelled" in rush matting up to shoulder height."