Alternative form of when one door closes, another opens

(informal) To speak about things rashly or foolishly, when it would be better to stay silent.

(idiomatic, slang, vulgar, US) A good-humored threat of physical harm.

(intransitive, idiomatic) to maintain a background awareness of something; to remain alert to changes without it occupying one's full attention.

(poker) Four cards to a straight where cards of two different ranks could complete a straight. (E.g. 4-5-6-7)

(idiomatic) To not commit to a decision, to keep various options available.

plural of vested remainder subject to open

(law) A future interest held by a member of a class, for which the interest is certain to vest, but for which new members may enter the class before the interest vests, thereby reducing each member's share of the total interest.

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

present participle of leave one's options open