Synonyms and related words :
Milquetoast, baby, big baby, chicken, doormat, dull tool, gutless wonder, invertebrate, jellyfish, lightweight, meek soul, milksop, mollycoddle, namby-pamby, nebbish, nonentity, pansy, pantywaist, pushover, sad sack, sissy, softling, softy, sop, weak sister, weakling,