Without preparation or advance thought; offhand
Marked by a lack of care, accuracy, or organization; random.
Having no apparent external cause or influence; occurring or produced by its own energy, force, etc. or through internal causes; self-acting
(Music) Using or consisting of sounds to be chosen by the performer or left to chance; indeterminate:
Occurring without warning; unforeseen.
Not done on purpose
The definition of haphazard is something disorganized or without any particular order to it.
Presented between major radio or television programs:
Not intended; unintentional:
Due to oversight; unintentional
The definition of chance is accidental or not expected or planned.
The definition of fortuitous is happening by chance.
Find another word for unplanned. In this page you can discover 25 synonyms, antonyms, idiomatic expressions, and related words for unplanned, like: accidental, impromptu, desultory, hit-or-miss, adventitious, planned, spontaneous, aleatory, undesigned, unexpected and unintentional.