3 syllables:
pre order, we order, z order

2 syllables:
carper, barber, lurker, parker, burger, snorter, garter, harbor, berber, ardor, hoarder, barker, scarper, mortar, yarder, charter, order, forbear, shirker, carter, ardour, larder, forebear, warder, arbor, burgher, worker, harper, corker, starter, verger, tartar, darter, sorter, torpor, martyr, border, stertor, arguer, yorker, porker, shorter, porter, marker, quarter, turgor, harbour, durbar, markhor, arbour, parterre, barter, boarder, markhoor, harder, sharper

3 syllables:
converter, absorber, recorder, nonstarter, rank order, last quarter, trench mortar, disorder, pearl harbor, supporter, co-worker, in order, exporter, first quarter, stop order, court order, safe harbor, subverter, ann arbor, reporter, transporter, snail darter, word order, enlarger, mail order, inverter, importer, reorder, new yorker, convertor

4 syllables:
postal order, speech disorder, market order, superorder, supercharger, out of order, bricks and mortar, money order, pecking order, cream of tartar, standing order, point of order, open order, torque converter, batting order, shock absorber, tape recorder, purchase order, sleep disorder, social worker

5 syllables:
wire recorder, panic disorder, mental disorder, manic disorder

6 syllables:
athletic supporter, conversion disorder, depressive disorder, affective disorder, bessemer converter, sleep terror disorder, bipolar disorder

7 syllables:
anxiety disorder, delusional disorder, distinguished service order, catalytic converter

8 syllables:
psychosomatic disorder, posttraumatic stress disorder, videocassette recorder, personality disorder

9 syllables:
attention deficit disorder

11 syllables:
generalized anxiety disorder