doormat
[noun]
Synonyms: weakling, baby, invertebrate, jellyfish, milksop, Milquetoast, mollycoddle, namby-pamby, pantywaist, sissy

[TahlilGaran] English Synonym Dictionary ▲

door‧mat /ˈdɔːmæt $ ˈdɔːr-/ noun [countable]

1. a piece of material inside or outside a door for you to clean your shoes on

2. informal someone who lets other people treat them badly and never complains:
Don’t let him treat you like a doormat.

[TahlilGaran] Dictionary of Contemporary English ▲