The word "un designed" means something that has not been planned or intended. Synonyms for this word include accidental, incidental, unintended, unplanned, and unintentional. These words all convey the idea that something has happened without prior foresight or premeditation. Other synonyms for "un designed" include haphazard, chance, coincidental, fortuitous, and serendipitous. These words suggest an element of luck or chance in the outcome. Some other options include ad hoc, impromptu, extemporaneous, and improvised, which suggest that something was done without prior planning, but may be intentional or purposeful. Regardless of the synonym used, the meaning remains the same: something that was not deliberately planned or intended.