Definition of "pompously"

When he went home on leave he rioted on a large scale - pompously.

1899 February, Joseph Conrad, “The Heart of Darkness”, in Blackwood’s Edinburgh Magazine, volume CLXV, number M, New York, N.Y.: The Leonard Scott Publishing Company, […], part I, page 211

'I could cite good reasons both for and against such a course of action,' he began pompously.

1956 , Johanna Spyri, Heidi, translation of original by Eileen Hall, page 85