'Featureless' definitions:

Definition of 'featureless'

From: WordNet
adjective
Lacking distinguishing characteristics or features; "the featureless landscape of the steppe"

Definition of 'Featureless'

From: GCIDE
  • Featureless \Fea"ture*less\ (?; 135), a. Having no distinct or distinctive features. [1913 Webster]