See also: déeṇi and d̪eeni Navajo Etymology di- (thematic) + -ee- (ni-modal 3rd person subject prefix) + -∅- (classifier) + -ní (neuter imperfective stem of root -NÍ, “to be sharp”). Verb deení it is sharp, keen-edged doo deení da ― it is dull, not sharp. Paradigm: Neuter imperfective (ni), third person only.Wikiwand - on Seamless Wikipedia browsing. On steroids.