Inexpressive is a related term of baffling.
As adjectives the difference between inexpressive and baffling
is that inexpressive is lacking expression or emotion while baffling is puzzling and frustrating.
As a verb baffling is
.
As a noun baffling is
an act of foiling or thwarting.
baffling
English
Verb
(head)
Noun
(
en noun)
An act of foiling or thwarting.
* 1831 , The Quarterly Review (London)
-