lack determination; cannot make decision firmly

[Wai_Wai]

lack determination; cannot make decision firmly
If a person lacks determination/resolution; cannot make decision firmly:
- what words can I use to describe this?
- and how about its antonyms?

 

[Tdol]

Indecisive, vacillating, spineless...;-)

 

[Wai_Wai]

How about:
- weak-minded, hesitant
Antonym: - strong-minded
??