1716, "one who plans, a deviser or arranger," agent noun from plan (v.). Betjeman coined the derogatory variant planster in 1945. Meaning "book or device that enables one to plan" is from 1971.
Entries linking to planner
plan v.
1728, "make a plan of; put on paper the parts, dimensions, and methods of construction of," from plan (n.). By 1737 as "to scheme, to devise ways and means for (the doing of something)." Related: Planned; planning; plans. Planned economy is attested by 1931. Planned Parenthood (1942) formerly was Birth Control Federation of America.