The term 'looked slyly' can be described by three different crossword solutions: OGLED (5 letters), peeped (6 letters), and LEERED (6 letters). OGLED is a verb meaning to look at someone or something with strong admiration or desire. Peeped is a verb meaning to look at something quickly and furtively. Lastly, LEERED is a verb meaning to look at someone in a suggestive or menacing way. All three words describe looking at something or someone with a sly expression.