heavy; weighty

heavy (feeling); depressed; gloomy; blue; uneasy

slow; sluggish; lumbering; ponderous; clumsy

important (position, responsibility, etc.); serious; grave

serious (punishment, illness, etc.); severe; critical

solid; established; dignified; sensible

important; essential; significant; major; key; principal

to pile up; to heap up; to stack up; to put on top of another

to repeat many times over; to go through repeatedly; to accumulate

careful; cautious; prudent; discreet; deliberate

to be piled up; to lie on top of one another

to come one after another; to happen over and over; to pile up (e.g. stress); to accumulate

to overlap (each other); to occur at the same time; to happen simultaneously

precious; valuable

serious; important; significant; grave; weighty

(body) weight

weight

weight (e.g. of someone's words); burden; grandeur; dignity

importance; significance

strict; severe; stringent; rigorous; rigid; firm; strong; secure