1) Alter 2) Change 3) Etherialise 4) Make ethereal 5) Modify 6) To make ethereal 1) Etherialise 
• (v. t.) To convert into ether, or into subtile fluid; to saturate with ether. • (v. t.) To render ethereal or spiritlike.
E·the're·al·ize transitive verb 1. To convert into ether, or into subtile fluid; to saturate with ether. 2. To render ethereal or spiritlike. « Etherealized , moreover, by spiritual communications with the other world.» Hawthorne. 
[v] - make ethereal
etherialise verb make ethereal
to make ethereal.
make ethereal