Lily-livered means not brave — a coward. It is an old, colourful way to say that, not a note about health. Though actually, the picture is hundreds of years old: people once believed courage lived in the liver. A liver with plenty of blood would look dark and red; a “lily” liver would be pale, as if it had no blood, and so no courage. Shakespeare used the word, and that is still the flavour it has: a little like a play, sometimes a joke, not the word you throw at a friend in ordinary talk unless you are playing. In everyday English, people say coward, scared, or not brave. You will meet lily-livered in stories, in films that want an old sound, and in writing that is showing off a bit.

膽小的、懦弱的（古雅、戲曲味的罵法；日常較常說「沒種」「膽小鬼」）