tranquillity

As an adjective carefree

is without cares; free of concern or worries; easy; casual; without difficulty.

As a noun tranquillity is

the state of being tranquil.

As a noun tranquillity

is the state of being tranquil.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As a noun tranquillity

is the state of being tranquil.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between convenience and tranquillity

is that convenience is the quality of being suitable, useful or convenient while tranquillity is the state of being tranquil.

As nouns the difference between recumbency and tranquillity

is that recumbency is recumbence while tranquillity is the state of being tranquil.

Pause is a related term of tranquillity.

As a verb pause

is .

As a noun tranquillity is

the state of being tranquil.

Seriousness is a related term of tranquillity.

As nouns the difference between seriousness and tranquillity

is that seriousness is the state or quality of being serious while tranquillity is the state of being tranquil.

Intermission is a related term of tranquillity.

As nouns the difference between intermission and tranquillity

is that intermission is a break between two performances or sessions, such as at a concert, play, seminar, or religious assembly while tranquillity is the state of being tranquil.

As nouns the difference between tranquillity and clarity

is that tranquillity is the state of being tranquil while clarity is the state, or measure of being clear, either in appearance, thought or style; lucidity.