zomboid adjective 1noun 1forms 3 adjective1 •(informal) Zombielike.The effects which are supposed to be produced can be caricatured as inactivity (the zomboid slump in front of the box) or, at the other extreme, a manic activity […] — 1991 noun1 •(informal) A person who resembles a zombie. formszomboids · more zomboid · most zomboid