docile, tractable, compliant, and teachable
dogmatic, bigoted, libelous, and unsympathizing
doubt, indecision, suspense, and perplexity
dread, disgust, repugnance, and dreariness
dreary, dispirited, unhappy, and peevish
dry, lifeless, tiresome, and uninteresting
dubious, equivocal, fluctuating, and uncertain
dull, heavy, painstaking, and conscientious
E
earth, air, stars, and sea