The government. It's the most fearsome G word in the English language. It's utterance elicits a sense of dread and conjures up a feeling of incompetence.

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.

The gravitational constant. Ironically, even though it’s called big G, it’s incredibly small.