predesigned

As adjectives the difference between predesigned and preset

is that predesigned is that is already and previously designed, in contrast to what one can design at presence while preset is set in advance, or as a default.

As a verb preset is

to set something in advance.

As an adjective predesigned

is that is already and previously designed, in contrast to what one can design at presence.

As a verb redesigned is

(redesign).

As a noun design

is a plan (with more or less detail) for the structure and functions of an artifact, building or system.

As a verb design

is   To assign, appoint (something {{term|to|lang=en}} someone); to designate.

As an adjective predesigned is

that is already and previously designed, in contrast to what one can design at presence.

As adjectives the difference between designed and predesigned

is that designed is created according to a design while predesigned is that is already and previously designed, in contrast to what one can design at presence.

As a verb designed

is (design).