adjective
1.
Synonyms: random , aimless, designless, desultory, haphazard, hit-or-miss, indiscriminate, purposeless, unaimed, unconsidered
Antonyms: planned
2.
Synonyms: unintentional , inadvertent, undesigned, undevised, unintended, unpremeditated, unpurposed, unthought
Antonyms: planned