A group of three callous-manipulative personality traits: narcissism, Machiavellianism, and psychopathy.

having hair of a dark color, usually dark brown.

(astrophysics, cosmology, astronomy, physics) The unknown portion of the Universe outside standard physics, including dark matter and dark energy.

plural of dark territory

(US, rail transport) A section of railroad track not controlled by signals.

simple past tense of go dark

To cease operations, to close. / To cease communications.

Third-person singular simple present indicative form of go dark

present participle of go dark

(Internet) The portion of the Deep Web hosted on darknets (“restricted networks”). / (Internet, proscribed) The Deep Web.