Which word describes something lacking a definite shape or form?

Which word describes something lacking a definite shape or form?

• A. Solid
• B. Amorphous
• C. Rigid
• D. Defined

Answer: (B)

The main idea here is describing something that has no fixed shape or form. Amorphous fits because it means without a clearly defined shape or structure. It’s used for things that don’t have a regular, organized form—like a cloudy, shapeless mass or a vague, ill-defined plan. The word literally suggests “without form,” so it matches the idea of lacking a definite shape. In contrast, solid implies a definite shape and volume, rigid suggests stiffness and a fixed form, and defined points to clear boundaries or outlines. So they convey the opposite of shapelessness.

The main idea here is describing something that has no fixed shape or form. Amorphous fits because it means without a clearly defined shape or structure. It’s used for things that don’t have a regular, organized form—like a cloudy, shapeless mass or a vague, ill-defined plan. The word literally suggests “without form,” so it matches the idea of lacking a definite shape.

In contrast, solid implies a definite shape and volume, rigid suggests stiffness and a fixed form, and defined points to clear boundaries or outlines. So they convey the opposite of shapelessness.