ISEE Lower Level Practice Exam

The word "enormous" is used to describe something that is extremely large or vast in size. The synonym "gigantic" shares this meaning and suggests a size that is not just large, but impressively so. Both "enormous" and "gigantic" convey similar ideas of something being significantly larger than usual, making them interchangeable in many contexts.

On the other hand, the other choices do not convey the same sense of size at all. "Tiny" refers to something very small, "moderate" suggests a medium or average size, and "diminutive" also implies smallness. Since these terms contrast with the meaning of "enormous," only "gigantic" serves as an appropriate synonym.