momentous

As an adjective momentous

is outstanding in importance, of great consequence.

As an adverb momentarily is

in a momentary manner; for a moment or instant.

As adjectives the difference between momentous and tremendous

is that momentous is outstanding in importance, of great consequence while tremendous is awe-inspiring; terrific.

As adjectives the difference between momentous and auspicious

is that momentous is outstanding in importance, of great consequence while auspicious is of good omen; indicating future success.

As adjectives the difference between momentous and lawful

is that momentous is outstanding in importance, of great consequence while lawful is conforming to, or recognised by law or rules.

Momentous is a related term of express.

As adjectives the difference between momentous and express

is that momentous is outstanding in importance, of great consequence while express is (not comparable) moving or operating quickly, as a train not making local stops.

As a noun express is

a mode of transportation, often a train, that travels quickly or directly or express can be (obsolete) the action of conveying some idea using words or actions; communication, expression.

As a verb express is

(senseid) to convey or communicate; to make known or explicit.

Corporeal is a related term of momentous.

As adjectives the difference between corporeal and momentous

is that corporeal is material; tangible; physical while momentous is outstanding in importance, of great consequence.

As adjectives the difference between onerous and momentous

is that onerous is imposing or constituting a physical, mental, or figurative load which can be borne only with effort while momentous is outstanding in importance, of great consequence.

Momentous is a related term of considerable.

As adjectives the difference between momentous and considerable

is that momentous is outstanding in importance, of great consequence while considerable is considerable.

Momentous is a related term of cogent.

As adjectives the difference between momentous and cogent

is that momentous is outstanding in importance, of great consequence while cogent is reasonable and convincing; based on evidence.

Burdensome is a related term of momentous.

As adjectives the difference between burdensome and momentous

is that burdensome is of or like a burden; arduous or demanding while momentous is outstanding in importance, of great consequence.