Given to moralising in a pompous or affected manner.
Late Middle English: from Latin sententiosus, from sententia ‘opinion’ (see sentence). The original sense was ‘full of meaning or wisdom’, later becoming depreciatory.
“He’s a sententious old man and I’m not listening any more!”
A conference or meeting to discuss a particular subject./ A collection of essays or papers on a particular subject by a number of contributors.
Late 16th century (denoting a drinking party): via Latin from Greek sumposion, from sumpotēs ‘fellow drinker’, from sun- ‘together’ + potēs ‘drinker’.