Lightweight dream meaning is explained below using 1 different source. Each interpretation is shown with its source.
Interpretation 1 — Nancy Wagaman
You or something else being lightweight can represent: Airiness.
A “light” or carefree attitude.
Without burden.
A perceived lack of substance or strength.
See Levitating, Floating, Size, Measure, Skinny
Source: The Curious Dreamer’s Dream Dictionary • Author: Nancy Wagaman