covered
adj.-
1 overlaid or hidden (adj.) A2 Elementaryhaving something on top of it, often to protect it or hide it.
overlaid, enveloped, or hidden by a layer of something else.
ExampleThe old car was covered with a thick layer of dust in the garage.
ExampleThe mountain peaks remained covered with dense clouds throughout the morning, preventing the rescue team from identifying a safe landing site.
PitfallThe ground was covered by snow.The ground was covered with snow.While 'by' is sometimes used in passive voice, 'covered with' is the standard way to describe a layer of something on a surface.
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2 dealt with or handled (adj.) B1 Intermediatealready finished, discussed, or paid for.
having been addressed, included in a discussion, or financially accounted for.
ExampleDon't worry about the bill; your dinner is already covered.
ExampleThe professor assured the students that all the exam topics had been covered during the previous three weeks of lectures.