serious

As adjectives the difference between serious and deadly

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while deadly is subject to death; mortal.

As an adverb deadly is

fatally, mortally.

Germane is a related term of serious.

As a noun germane

is german, member of germanic tribe.

As an adjective serious is

without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.

Serious is a related term of elevated.

As adjectives the difference between serious and elevated

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while elevated is raised, particularly above ground level.

As a verb elevated is

(elevate).

Serious is a related term of superior.

As adjectives the difference between serious and superior

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while superior is higher in quality.

As a noun superior is

a person of higher rank or quality.

As adjectives the difference between serious and miserable

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while miserable is in a state of misery: very sad, ill, or poor.

As adjectives the difference between prodigious and serious

is that prodigious is very big in size or quantity; gigantic; colossal; huge while serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.

Serious is a related term of leading.

As adjectives the difference between serious and leading

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while leading is providing guidance or direction.

As a verb leading is

.

As a noun leading is

an act by which one is led or guided or leading can be (typography) vertical space added between lines; line spacing.

Devout is a synonym of serious.

As adjectives the difference between devout and serious

is that devout is devoted to religion or to religious feelings and duties; absorbed in religious exercises; given to devotion; pious; reverent; religious while serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.

As a noun devout

is (obsolete) a devotee.

As adjectives the difference between serious and fatal

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while fatal is proceeding from, or appointed by, fate or destiny.

As a noun fatal is

a fatality; an event that leads to death.

Serious is a related term of sedulous.

As adjectives the difference between serious and sedulous

is that serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn while sedulous is diligent in application or pursuit; constant, steady, and persevering in business or in endeavors to effect an object; steadily industrious; assiduous.