amorphous

1. ADJ Something that is amorphous has no clear shape or structure. 无固定形状的; 无固定结构的[正式] [usu ADJ n]

A dark, strangely amorphous shadow filled the room. 一团深色、形状怪异的影子笼罩着整个房间。

...the amorphous mass of the unemployed. ...形形色色的失业群体。