Similar circumstances produce the same Unvariable effects.
"The Complete Poetical Works of Percy Bysshe Shelley Volume III"
Percy Bysshe Shelley Edited by Thomas Hutchinson, M. A.
She was weary of expectation and disgust, and would gladly be fixed in some Unvariable state.
"Rasselas, Prince of Abyssinia"
Samuel Johnson
It has an Unvariable sound, except that of is sometimes spoken nearly as ov.
"A Grammar of the English Tongue"
Samuel Johnson