nightfall (noun) nightfall: beginning of darkness
Sinonime: big,
consequential,
distinguished, doozie, dynamite,
essential, fab,
fat,
influential,
material,
meaningful,
momentous, mondo,
noteworthy,
renowned,
significant, solid gold,
something, something else,
substantial,
super, super-duper, to the max,
unreal*,
venerable, weighty
Antonime: insignificant,
unimportant, unnoteworthy, unnoticeable