doormat (n.)

• baby
• carpet
• carpeting
• chicken
• crybaby
• flooring
• invertebrate
• jellyfish
• lightweight
• mat
• milksop
• mollycoddle
• namby-pamby
• nebbish
• nonentity
• pansy
• pantywaist
• pave
• pavement
• pushover
• rug
• sissy
• softy
• sop
• tiling
• weakling