Letters that make all-out
a, o, l, t, u are letters that make 'all-out'
call-out is a word created by adding a letter to 'all-out'
1 possible definitions for 'all-out'
Under this definition, all-out is an adjective and has the following properties:
full-scale has the same meaning as all-out
complete is similar to all-out.
"all-out war", "a full-scale campaign against nuclear power plants"