Submitted by Anonymous (not verified) on Thu, 10/26/2017 - 17:01 Lemma: darkenNgram Count: 1Wordnet ID: 33626Starts with letter: YesIndefinite Article: aGoogle Ngram Count: 561237Sense count: 2Contained in other ngrams: 4Hierarchy: AdjectiveNounPresent ParticipleForms: darkeneddarkensForms Count: 2