Better news comes: the son of Kabinga is to be here to-night, and we shall concoct plans together.

The outlook was too vague, my own mind too troubled, for me to concoct plans or to make any elaborate determinations.

I, too, have been concocting plans, but they come much to the same thing.

He arrived accordingly, and they concocted plans.

The conspirators had owned up frankly to their share of the villany, and were hard at work concocting plans for its undoing.