(idiomatic) Brains; a person's ability to think. / Literal brains as a general substance. / (neuroanatomy) A collection of cell bodies and (usually) dendritic connections, in contrast to white matter.

(idiomatic) What is wrong? What's the problem? / (dated) What's happening? What's the news?

a fact / (idiomatic) a more factual correction / (idiomatic) something completely true

The property of behaving in a matter-of-fact manner.

(physics) matter which has sufficiently high density that the dominant contribution to its pressure arises from the Pauli exclusion principle.

(astronomy, astrophysics) Particles of matter that cannot be detected by their radiation but whose presence is inferred from gravitational effects.

(physics) A proposed form of matter that includes strange quarks in addition to the usual up and down quarks of nuclear matter.

Telekinesis.

Willpower alone can overcome a physical problem.

As though stating a fact. / As though the situation is normal and not unusual; not dramatically or fancifully.