Open English Wordnet
Adjectives
(s)sententiousabounding in or given to pompous or aphoristic moralizing“too often the significant episode deteriorates into sententious conversation” (Kathleen Barnes)
(s)pithy, sententiousconcise and full of meaning“welcomed her pithy comments”, “the peculiarly sardonic and sententious style in which Don Luis composed his epigrams” (Hervey Allen)