preferable
[pref-er-uh-buh l, pref-ruh- or, often, pri-fur-]
adjective
more desirable.
worthy to be preferred.
Origin of preferable
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
preferable
adjective
usage
Since preferable already means more desirable, one should not say something is more preferable or most preferable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
preferable
Online Etymology Dictionary, © 2010 Douglas Harper