Third-person singular simple present indicative form of keep one's powder dry

Third-person singular simple present indicative form of keep one's options open

To be careful and alert to the possibility of danger.

(UK, colloquial) do one's part

(idiomatic) Do not criticise matters outside your field of expertise; mind your own business.

Third-person singular simple present indicative form of keep a dog and bark oneself

Alternative form of buy a dog and bark oneself

(figuratively, idiomatic) to listen for important information.

To fulfill a commitment as part of keeping to an agreement.

To remain vigilant and ready for action.