WordNet sense 1 (not intentional):

unintentional, unplanned

WordNet sense 2 (not deliberate):

unintended

WordNet sense 3 (unaware because of a lack of relevant information or knowledge):

unknowing, unknowledgeable

WordNet sense 4 (not informed; lacking in knowledge or information):

uninformed

WordNet sense 5 (not aware or knowing):

unaware