(mathematics) The real number system, viewed as a line.

Alternative spelling of unreactive

(chemistry) The organic reaction of an aryl- or vinyl-boronic acid with an aryl- or vinyl-halide or pseudohalide, such as triflates, catalyzed by a palladium(0) complex, widely used to synthesize polyolefins, styrenes, and substituted biphenyls.

As happens in real life; not fictional or theoretical; actual as opposed to believed or assumed.

Pre-existing or made previously and suitable for use without (further) preparation or modification; comparable with regard to the amount of preparation required.

A ready-made object.

Every decision has consequences; a person's actions will come back to them; if one starts trouble or takes actions in spite of the discontent they cause, one will incur negative consequences.

(literally) An authentic bargain. / (idiomatic) A beneficial result or favorable state-of-affairs.

The consequences of one's actions to oneself are in proportion to one's good or bad intentions towards others.

(computing) Unalterable, capable of being read but not written.