Under cover is a term used to describe a situation in which someone or something is hidden or concealed. The term can be broken down into three crossword solutions: ABED (4 letters), INBED (5 letters), and INCOGNITO (9 letters). ABED is an adjective meaning 'lying down in bed, ' while INBED is a verb meaning 'to put or get into bed.' Finally, INCOGNITO is an adverb meaning 'in disguise; with one's identity concealed.' Together, these words describe the concept of being hidden or concealed, as if one were lying in bed with their identity disguised.