Antonyms of adj preset

1 sense of preset

Sense 1
preset, predetermined -- (set in advance; "a preset plan of action"; "at a predetermined time")

INDIRECT (VIA planned) -> unplanned -- (without apparent forethought or prompting or planning; "an unplanned economy"; "accepts an unplanned order"; "an unplanned pregnancy"; "unplanned remarks")

Similarity of adj preset

1 sense of preset

Sense 1
preset, predetermined -- (set in advance; "a preset plan of action"; "at a predetermined time")
       => planned (vs. unplanned) -- (designed or carried out according to a plan; "the planned outlays for new equipment")