As adjectives the difference between unracked and unbacked
is that unracked is not racked while unbacked is having no back.
As a verb unracked
is past tense of unrack.
unracked
English
Verb
(head)
(unrack)
Adjective
(-)
Not racked. unrack
English
Verb
(
en verb)
To remove from a rack.