devoid

dɪˈvɔɪd

adjective

entirely lacking or free from.

Lisa kept her voice devoid of emotion

lacking,without,free from/of,empty of,vacant of,void of,bare of,barren of,bereft of,drained of,denuded of,deprived of,depleted of,destitute of,bankrupt of,wanting,in need of,minus,sans