dis·re·gard 
(dĭs′rĭ-gärd)
(dĭs′rĭ-gärd)tr.v. dis·re·gard·ed, dis·re·gard·ing, dis·re·gards
1. To pay no attention or heed to; ignore: We disregarded your advice.
2. To show no evidence of attention concerning (something): conduct that disregards risks to others.
3. To treat without proper respect or attentiveness.
n.
Lack of thoughtful attention or due regard.
dis′re·gardful adj.