lily-livered

[lil-ee-liv-erd] /ˈlɪl iˈlɪv ərd/
adjective
1.
weak or lacking in courage; cowardly; pusillanimous.
Origin
1595-1605; lily + liver1 + -ed3
British Dictionary definitions for lily-livered

lily-livered

adjective
1.
cowardly; timid
Word Origin and History for lily-livered
adj.

"cowardly," 1605, in "Macbeth;" from lily (in its color sense of "pale, bloodless") + liver (n.1), which was a supposed seat of love and passion. A healthy liver is typically dark reddish-brown.