he; boyfriend

(geology) a continent / (especially) China

explorer (person who by means of travel searches out new information)

the dark, cruel side of a matter or situation / (Star Wars) the dark side of The Force

a historical period where social disorder is so great due to war, disease, political disorder etc. that there is little or no cultural development; Dark Ages

a type of interstellar cloud that is so dense that it obscures light from background stars; a dark nebula

dark matter

underworld (part of society engaged in crime or vice)

(colloquial) current boyfriend

everything