Dictionary
un•cer•e•mo•ni•ous
Pronunciation: (un"ser-u-mō'nē-us), [key]—
adj.
1. discourteously abrupt; hasty; rude:
He made an unceremonious departure in the middle of my speech.
2. without ceremony or formalities; informal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.