ETYM Latin futilis that easily pours out, that easily lets loose, vain, worthless, from the root of fundere to pour out: cf. French futile. Related to Fuse.
Producing no result or effect; SYN. ineffectual, otiose, unavailing.

(Homonym: idle, idol).
1. Not in active use; SYN. unused.
2. Not in action or at work.
3. Not having a job; SYN. jobless, out of work.
4. Lacking a sense of restraint or responsibility; SYN. loose.
5. Silly or trivial; SYN. light.

1. Having no need.
2. Not wanted; unnecessary; not requiste
3. Without sufficient cause; groundless; cuseless.

1. Having no beneficial use or incapable of functioning usefully
2. Not useful

In an old-fashioned manner, anachronistically; mustily