unintentional (adjective) unintentional: not planned
Sinonime: accidental,
aimless,
casual,
chance,
erratic,
extemporaneous,
fortuitous,
haphazard,
inadvertent, involuntary, purposeless,
random,
unconscious, undesigned, undevised,
unexpected,
unforeseen, unintended,
unplanned, unpremeditated, unthinking, unthought, unwitting
Antonime: deliberate,
intended,
intentional,
planned