régulier

Etymology
, borrowed from.

Adjective

 * 1) regular (conforming to rules)
 * 2)  (of a polygon) regular
 * 3) dependable
 * 4) legitimate
 * 5)  (of a verb etc.) regular
 * 6) regular, steady (continual)

Noun

 * 1)  One's regular sexual or romantic partner (as opposed to a partner with which one is having an affair)