LexicO is a resource deriving from Parole-Simple-Clips (http://hdl.handle.net/20.500.11752/ILC-88). This resource contains all four levels of linguistic information represented in PSC (phonology, morphology, syntax, and semantics) which have been automatically analysed to find redundant, erroneous and missing data. The process of updating that conducted to the current version of LexicO starting from PSC included: i) the removal of all sure redundant entries (i.e. duplicates) belonging to all four linguistic levels; ii) the creation of tables dedicated to candidate redundants, detected by considering specific similarities amongst entries; iii) the correction of missing semantic and syntax-semantics interface relations amongst the entries of lexicon.