Simple past tense and past participle of shadow.(verb)
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Use "shadowed" in a sentence
"His attention was focused on Dante, his expression shadowed and brooding, a teenager’s intense and single-minded want despite the fact that he was actually a year or two older than Dante."
"In that situation the instinct is to hide, rather than to sit down on the railway line, the threat of a soon-moving train shadowed by the menace of a chanting crowd with camera phones."
"The mean annual rainfall is about 3,000 millimeters (mm), but varies with elevation from ~1,750 mm at the base (1,430 mm at the north end) to ~3,300 mm on the peaks, also with aspect, ocean-facing slopes being wetter than north-facing rain shadowed slopes."