Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Lībĕrālĭa, ĭum, v. 3. Liber, II.

2. Lībĕrālis, e, adj., of or belonging to Liber or Bacchus: ludi, a festival in honor of Bacchus, = Liberalia (v. infra), Naev. ap. Paul. ex Fest. p. 116 Müll.
Hence, subst.: Lībĕrālĭa, ĭum, n., a festival in honor of Liber, celebrated on the 17th of March, the day on which youths received the manly toga, Ov. F. 3, 713: Liberalium dies, a pontificibus agonium martiale appellatur, Macr. S. 1, 4, § 15: sacra, id. ib. 1, 18, § 22; Calend. Maff. ap. Inscr. Orell. II. p. 411: Liberalia tu accusas, Cic. Att. 14, 10, 1: Liberalibus litteras accepi tuas, id. Fam. 12, 25, 1.
Called also: ludi Liberales: Liberalia Liberi festa, quae apud Graecos dicuntur Διονύσια. Libera lingua loquemur ludis Liberalibus, Naev. ap. Paul. ex Fest. p. 116 Müll.; Com. Rel. v. 113 Rib.