fainthearted (adj.)

• abulic
• afraid
• chicken
• chickenhearted
• cowardly
• daunted
• dismayed
• faint
• fearful
• feeble
• feebleminded
• frail
• funky
• infirm
• intimidated
• invertebrate
• lily-livered
• mousy
• panicky
• pliable
• sissified
• sissy
• soft
• spineless
• timid
• timorous
• unmanly
• unmanned
• weak
• weak-kneed
• white-livered
• yellow