means Correct, just, or proper; the direction opposite of left; or an entitlement a person is morally or legally owed.

from From Old English 'riht,' meaning straight, just, and correct — itself from a Proto-Indo-European root '*reg-' meaning 'to move in a straight line, to direct,' the same ancient root that gives us 'regal,' 'regular,' 'rectify,' and 'erect.' The hand sense came later: because most people are right-handed, the 'correct' or 'proper' hand became simply the 'right' one, while the other side carried the awkward, sinister reputation (Latin 'sinister' literally meant left). So at its core, 'right' has always meant something laid out straight and true — morality, geometry, and dexterity all branching from one idea of unbent direction.