Taghaful – neglect/ignorance
This word is expressed beautifully in Mirza Ghalib’s couplet given below.
Hamne maana ke taghaful na karoge lekin
khaak ho jayenge hum, tum ko khabar hone tak
khaak – destroyed
We have attached a link of the complete ghazal in which this couplet appears- sung by Jagjit Singh.