(idiomatic) Holding starkly opposite views on an issue.

(vulgar, idiomatic, imperative) Act now or state one's disinterest, make a decision, particularly in contexts where one is inconveniencing others by inaction and indecision.

(mathematics) the theorem that there is at least one prime number between n and 2n for every n>1, i.e.:

Used other than figuratively or idiomatically: see pound, the, table. / (figuratively) To vehemently assert one's position.

(idiomatic) To settle for a poor option due to a lack or unavailability of anything better

a vaccine which prevents or eases the severity of the problems from an infection that has already occurred.

(finance) To carry out the supposed practice whereby locals (floor traders trading for their own account) buy or sell to push prices towards where they suspect stop loss orders lie, with a view to profiting from the resulting acceleration of the move when those orders hit the market.

present participle of square the circle

(idiomatic) Inexperienced; just beginning; immature (especially in judgment).

You can't have it both ways.