EASINESS
easiness
(noun) the quality of being easy in behavior or style; “there was an easiness between them”; “a natural easiness of manner”
ease, easiness, simplicity, simpleness
(noun) freedom from difficulty or hardship or effort; “he rose through the ranks with apparent ease”; “they put it into containers for ease of transportation”; “the very easiness of the deed held her back”
easiness, relaxation
(noun) a feeling of refreshing tranquility and an absence of tension or worry; “the easiness we feel when sleeping”
Source: WordNet® 3.1
Etymology
Noun
easiness (usually uncountable, plural easinesses)
The state or quality of being easy in its various senses, particularly
Freedom from discomfort and worry: comfort.
Freedom from inhibition and awkwardness: grace.
Lack of concern or care: carelessness, indolence.
Lack of difficulty or trouble: facility; simplicity.
Lack of harshness: gentleness, kindness.
Lack of firm conviction: gullibility, credulity.
Source: Wiktionary
Eas"i*ness, n.
1. The state or condition of being easy; freedom from distress; rest.
2. Freedom from difficulty; ease; as the easiness of a task.
3. Freedom from emotion; compliance; disposition to yield without
opposition; unconcernedness.
Give to him, and he shall but laugh at your easiness. South.
4. Freedom from effort, constraint, or formality; -- said of style,
manner, etc.
With painful care, but seeming easiness. Roscommon.
5. Freedom from jolting, jerking, or straining.
Source: Webster’s Unabridged Dictionary 1913 Edition