Old English rihthand; see right (adj.2) + hand (n.). Figurative for "indispensable person," 1520s; right-hand man first attested 1660s. Right-handed attested from late 14c.
he writes with his right hand but pitches with his left
Rig veda
rigatoni
Rigel
rigging
right
right hand
right wing
righteous
righteousness
rightful
rightly