vagary

[ vuh-gair-ee, vey-guh-ree ]

/ vəˈgɛər i, ˈveɪ gə ri /

an unpredictable or erratic action, occurrence, course, or instance: the vagaries of weather; the vagaries of the economic scene.

a whimsical, wild, or unusual idea, desire, or action.

Origin of vagary

1565–75, in sense “wandering journey”; apparently < Latin vagārī to wander

2 caprice, whim, quirk, crotchet.

Who can tell what vagary or what compromise may not be calling itself Christianity?

Winds Of Doctrine |George Santayana
He believed that "absence only makes the heart grow fonder," not knowing that this statement is only the vagary of a poet.

Little Journeys to the Homes of the Great, Vol. 1 of 14 |Elbert Hubbard
But this vagary of yours—I really can't consider it anything else—is most distressing.

Poor Man's Rock |Bertrand W. Sinclair
There was a composed yet reckless light in his eye—the old veiled gleam of vagary, and paradox, and escapade.

Satan Sanderson |Hallie Erminie Rives

How near they would pass depended on the vagary of the waves and the tide.

Blow The Man Down |Holman Day

vagary

/ (ˈveɪɡərɪ, vəˈɡɛərɪ) /

an erratic or outlandish notion or action; whim

C16: probably from Latin vagārī to roam; compare Latin vagus vague