Definition: dignified, serious, and/or solemn of manner

• There are six elements of gravitas critical to leadership: grace under fire, decisiveness, emotional intelligence and the ability to read a room, integrity and authenticity, a vision that inspires others, and a stellar reputation. — Sylvia Ann Hewlett (1946-) English economist
• It would be awesome to be so impressive that we could sway people to our way of thinking just by declaiming our thoughts, but probably most of us lack such gravitas. Luckily, there’s something even better: evidence, logic, and argument. — Barry Mark Eisler (1964-) American novelist