WordReference Random House Unabridged Dictionary of American English © 2020
dis•mis•sive (dis mis′iv),USA pronunciation adj.
- indicating dismissal or rejection;
having the purpose or effect of dismissing, as from one's presence or from consideration:a curt, dismissive gesture.
- indicating lack of interest or approbation;
- dismiss + -ive 1635–45
'dismissively' also found in these entries (note: many are not synonyms or translations):