To cancel a command alias during your current login session use the command:
unalias alias_name
For example:
unalias print
This cancels the command alias print for you current login session.
If the alias name is the same as a command name escape the alias name to temporarily override the alias. For example:
alias rm='rm-1' rm *.ps toc.ps: ? n ..... \ rm *.ps
You will have to remove the alias definition from your shell startup file if you want to cancel the alias permanently.