Velleity
A desire to do something which isn’t strong enough to actually do it.
My homework was a velleity until I ascertained the consequences.
velleitious
A person who is prone to episodes of Velleity.
"Charlene always says she is going to do something, and then she doesn't. She is very velleitious."
velleity
1) a mild desire, a wish or urge too slight to lead to action
2) volition in its weakest form
2) volition in its weakest form
I always display the utmost velleity toward my homework.