Weighty describes something that is of great importance, seriousness, or consequence; having a significant impact or influence.
It can refer to physical heaviness, but is more often used figuratively to describe matters demanding careful consideration and deliberation.
Weighty decisions require thorough analysis, while Weighty problems present significant challenges.
The term can also suggest solemnity or gravity, as in a Weighty occasion or tone.
It implies a substantialness that commands respect and attention. .
DEEP
OBESE HEFTY HEAVY GRAVE
COGENT ROTUND
MASSIVE ONEROUS TELLING
GRIEVOUS
PONDEROUS IMPORTANT CORPULENT
INFLUENTIAL