juggernaut

As an adjective gargantuan

is (obsolete) of the giant gargantua or his appetite.

As a noun juggernaut is

a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path.

As a noun juggernaut

is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between juggernaut and tough

is that juggernaut is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path while tough is a person who obtains things by force; a thug or bully.

As an adjective tough is

strong and resilient; sturdy.

As an interjection tough is

(slang) (used to indicate lack of sympathy).

As a verb tough is

to endure.

As nouns the difference between astronaut and juggernaut

is that astronaut is astronaut while juggernaut is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path.

As nouns the difference between juggernaut and dreadnought

is that juggernaut is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path while dreadnought is a battleship, especially of the world war i era, in which most of the firepower is concentrated in large guns that are of the same caliber.

As a verb bruised

is past tense of bruise.

As a noun juggernaut is

a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path.

As nouns the difference between juggernaut and leviathan

is that juggernaut is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path while leviathan is (bible) a vast sea monster of tremendous strength, described as the most powerful and dangerous creature in the ocean.

As an adjective leviathan is

very large; gargantuan.

As nouns the difference between juggernaut and pantechnicon

is that juggernaut is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path while pantechnicon is a depository or place where all sorts of manufactured articles are collected for sale.

As nouns the difference between juggernaut and steamroller

is that juggernaut is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path while steamroller is a steam-powered heavy road roller.

As a verb steamroller is

to level a road using a steamroller.

As a noun juggernaut

is a literal or metaphorical force or object regarded as unstoppable, that will crush all in its path.

As a verb overwhelm is

to engulf, surge over and submerge.