1) Accidental 2) Chance 3) Fortuitous 4) Inadvertent 5) Involuntary 6) Not deliberate 7) Not premeditated 8) Undesigned 9) Unintended 10) Unplanned 11) Without deliberate intent 1) Accidental 2) Indeliberate 3) Instinctive 4) Involuntary 5) Subliminal 6) Undesigned 7) Unintended 8) Unwilled 9) Unwilling 10) Unwitting 
[adj] - without deliberate intent 2. [adj] - not intentional
unplanned adjective not intentional; `an unintended slight`; `an unintentional pun`; `the offense was unintentional`; `an unwitting mistake may be overlooked`
not intentional or deliberate: an unintentional omission from the list.