(law) “from now on”. Used to describe certain legal effects which are applicable solely from this point (in time) on and therefore do not affect past actions.

(law) from the beginning, from the outset. Used to describe certain legal effects that can affect situations prior to this point in time and therefore can affect past actions.

carried out with no preparation; impromptu

without preparation; extemporaneously

Something improvised.

(Incoterm) Meaning the buyer pays for all insurance and transportation from the seller's premises, and the seller's only responsibility is making the goods available at the seller's premises.

A former president

A former husband.

A former wife.

plural of ex-con