the.com/levity
Gravity's comic understudy, refusing to take the weight of things seriously.
means A lightness of mood or humor, especially when the moment seems to demand solemnity.
from From Latin levitas, lightness, from levis, light in weight — the literal opposite of gravity, before physics claimed that word.
Gravity's twinBoth descend from Latin weight terms, opposite ends.
Once an insultLong meant flighty unreliability, not welcome wit.
Spelling trapNo 'a' — it's not levitate's cousin spelled out.