Portentousness

The politician's portentousness during his speech did not win him any support from the audience.

The CEO's portentousness during the shareholders meeting seemed unnecessary and even off-putting.

His portentousness during the meeting made his coworkers feel uneasy.

The portentousness of the ominous message left her feeling uneasy.

The portentousness of the politician's speech foreshadowed drastic changes in the country's policies.