(a.) Destitute of expression.

Olympian aloof backward bashful blank chilled chilly cold constrained cool dead deadpan detached discreet distant dull empty fishy forbidding frigid frosty glassy guarded icy impassive impersonal inaccessible inexpressive inscrutable introverted lackluster lusterless modest offish poker-faced remote removed repressed reserved restrained reticent retiring shrinking standoff standoffish stolid subdued suppressed unaffable unapproachable uncongenial undemonstrative unexpansive unexpressive ungenial vacant vacuous withdrawn wooden