efficacious

But Michele Bachmann, who has been a wallflower of late, may point the way to a more efficacious line of attack: crony capitalism.

I asked him if he thought cattle cars would be an efficacious means of transporting the Palestinians to their new homes.

He inclines to the use of the tepid bath, as likely to be the most generally efficacious.

I know not how to offer advice, and I am incapable of giving any efficacious help.

I can say from experience, that it is a powerful sudorific, and very efficacious in a cold.

However much the theologian may believe in prayer, he cannot deny that it is less efficacious than action.

The commissioners regarded the land purchase act as embodying the most simple and efficacious remedy for existing evils.