In typography terms the difference between nonbold and unbold
is that nonbold is not bold while unbold is having a typeface which is nonbold.
As a verb unbold is
to change printed text from a bold typeface to a normal typeface.
nonbold
English
Adjective
(-)
(typography) Not bold. unbold
English
Verb
(
en verb)
(typography) To change printed text from a bold typeface to a normal typeface.
Usage notes
The terms unbolding'' (present participle) and ''unbolded (as a simple past form or as a past participle) are unattested.
Adjective
(-)
(typography) Having a typeface which is nonbold.