featureless

adj without distinct features (feature 2); uninteresting 无特色的; 无趣味的.

fear for, fearful, fearfully, fearfulness, fearless, fearlessly, fearlessness, fearsome, feasibility, feasible, feasibly, feast, feat, feather, feather bed, feather-bed, feather-brained, featherweight, feathery, feature, Feb, febrile, February, fecal, feces, feckless, fecklessly, fecklessness, fecund, fecundity, Fed, fed up, federal, federate, federation, fee, feeble, feeble-minded, feebleness, feebly,