Ominously

An anthropologist wrongly applied the word "Semitic" not just to languages like Arabic, Amharic, Tigrinya and Hebrew but specifically to ethnically and culturally Jewish people. More ominously, from 1880 through the Nazi period of German history, racists extended the word "Aryan," which had meant the Sanskrit-Persian language family, to deliberately foster the vile and discredited theory of a so-called Aryan race.

The thunder rumbled ominously in the distance.

From first to last he was ominously polite, and ominously silent.

His nostrils flared ominously and his fists opened and closed at his sides.

However, the next day dawned ominously with an overcast sky and we postponed our start till 8 o'clock.

Just as the Census Bureau forecasts growing racial diversity under any future level of immigration, it likewise projects ominously slow growth in America’s working-age population without more immigration.