(transitive, idiomatic) To propose an idea or make a suggestion in order to learn the reaction of others to it.

(idiomatic, dated) To oppose an action or behavior and yet engage in the same action or behavior; to be a hypocrite.

A person with a calm appearance has, or may have, considerable inner emotion, character, or intellect.

Alternative form of make someone's blood run cold

(idiomatic, figuratively) To support both sides of an argument.

A large expenditure of effort for a modest benefit.

Alternative form of run off at the mouth

Alternative form of run off at the mouth

Alternative form of take the ball and run with it

(simile, US, colloquial, politics) To run for political office with little chance of success. / (simile, US, colloquial) To run (in various senses) badly or not at all.