free
“Users want everything for free”
“Free as in ‘freedom’ not ‘free beer’”
/used:/
To indicate a given work can be used without monetary compensation
To indicate a given work is licensed under a permissive, libre license
/recommendations:/
Use “free” as in “free speech,” not as in “free beer”; indicate this context very clearly to avoid confusion
Use “libre” along with “free” to further stress the freedom-based meaning
Use “gratis” instead of “free (as in beer)” to clearly demarcate freedoms from monetary cost