How to unset range of array in Bash

I'm trying to delete range of array element but it's fail.. My array root@ubuntu:~/work# echo ${a[@]} cocacola.com airtel.com pepsi.com Print 0-1 array looks ok root@ubuntu:~/work# echo ${a[@]::2} cocacola.com airtel.com Now I'm trying to delete only these element using : root@ubuntu:~/work# unset a[@]::2 root@ubuntu:~/work# echo ${a[@]} It's delete whole array.. What I'm doing wrong ? I found other way of deleting range of array but why above things is not working ? for ((i=0; i<2; i++)); do unset a[$i]; done EDIT I had also tried but no luck unset -v 'a[@]::2'