onlest

Etymology
Variant of.

Adjective

 * 1)  Only.
 * 2) * c. 1850-1970, Scott Dunbar, quoted in 2009 by William R. Ferris in Give My Poor Heart Ease: Voices of the Mississippi Blues ISBN 080789852X:
 * I knowed the onlest thing to get her cured was to get a bucket of ice water,
 * I knowed the onlest thing to get her cured was to get a bucket of ice water,