'Inexpressive' definitions:

Definition of 'inexpressive'

(from WordNet)
adjective
Not expressive; "an inexpressive face"

Definition of 'Inexpressive'

From: GCIDE
  • Inexpressive \In`ex*press"ive\, a.
  • 1. Inexpressible. [R.] [1913 Webster]
  • 2. Without expression or meaning; not expressive; dull; unintelligent; as, an inexpressive countenance. [1913 Webster]