Reserved; shy; not forward or obtrusive; as, retiring modesty; retiring manners.

not blatant or overly aggressive in manner or appearance; "a retiring disposition"

not arrogant or presuming; "unassuming to a fault, skeptical about the value of his work"; "a shy retiring girl"

Of or pertaining to retirement; causing retirement; suited to, or belonging to, retirement.

moving toward a position farther from the front; "the receding glaciers of the last ice age"; "retiring fogs revealed the rocky coastline"

of a person who has held and relinquished a position or office; "a retiring member of the board"