1. Adiaphanous - CAST A SHADOW - COMPLICATED - CONDITIONAL - DARK AS NIGHT - DARK AS PITCH - DEAD OF NIGHT - DOUBLE-EDGED - DOUBLE-FACED - FEATURELESS - HALF-VISIBLE - INDEFINABLE - INSCRUTABLE - LITTLE KNOWN - MISINSTRUCT - NIGHT-FILLED - NIGHT-VEILED - NONDESCRIPT - NONSPECIFIC - OUT-OF-THE-WAY - PREVARICATE - SEMIVISIBLE - …