inapropiado
/inapɾoˈpjado/ · B2 · adj
inappropriate, unsuitable
🚫 in- (not) + apropiado (apt, proper) = not proper, inappropriate
Apropiado comes from Latin appropriare, 'to make one's own' (ad- + proprius, 'own'). Something apropiado fits what belongs to the situation. Add the negative prefix in- and it means not fitting: inapropiado.