Submitted by Anonymous (not verified) on Thu, 10/26/2017 - 18:29 Lemma: strengthenNgram Count: 1Wordnet ID: 126576Starts with letter: YesIndefinite Article: aGoogle Ngram Count: 3951763Sense count: 2Contained in other ngrams: 5Hierarchy: AdjectivePast ParticipleForms: strengtheningstrengthensForms Count: 2