serenity

As a noun sirene

is siren, alarm.

As a proper noun serenity is

in general use since the 1990s.

As an adjective sedate

is in a composed and temperate state.

As a verb sedate

is to tranquilize by giving a sedative; to calm; to soothe; to induce sleep.

As a proper noun serenity is

in general use since the 1990s.

As a proper noun serenity

is in general use since the 1990s.

As a noun indifference is

indifference, uncaringness.

As nouns the difference between serenity and gratitude

is that serenity is the state of being serene; calmness; peacefulness while gratitude is the state of being grateful.

As a proper noun Serenity

is {{given name|female|from=English}} in general use since the 1990s.

As nouns the difference between firefly and serenity

is that firefly is any beetle of the family Lampyridae, which exhibit bioluminescence during twilight while serenity is the state of being serene; calmness; peacefulness.

As a proper noun Serenity is

{{given name|female|from=English}} in general use since the 1990s.

As a proper noun serenity is

in general use since the 1990s.

As a proper noun serenity

is in general use since the 1990s.

As a noun lucidity is

the property of being lucid, lucidness.

Gratification is a related term of serenity.

As a noun gratification

is the act of gratifying, or pleasing, either the mind, the taste, or the appetite; as, the gratification of the palate, of the appetites, of the senses, of the desires, of the heart.

As a proper noun serenity is

in general use since the 1990s.

As nouns the difference between solemnity and serenity

is that solemnity is the quality of being deeply serious and sober or solemn while serenity is the state of being serene; calmness; peacefulness.

As a proper noun Serenity is

{{given name|female|from=English}} in general use since the 1990s.

Quiet is a synonym of serenity.

As an adjective quiet

is with little or no sound; free from of disturbing noise.

As a verb quiet

is to become quiet, silent, still, tranquil, calm.

As a noun quiet

is the absence of sound; quietness.

As a proper noun serenity is

in general use since the 1990s.