ˈon-the-spot adjective [only before noun]
done immediately while you are at a particular place:
Doctors can often give on-the-spot treatment.
⇒ on the spot at spot¹(5)

[TahlilGaran] Dictionary of Contemporary English ▲

on the spot
1.
immediately.
Huge numbers of people donated blood on the spot.

We fell in love with the puppy and bought him on the spot.

2.
in the place where something has just happened.
Police arrested the robber on the spot.

[TahlilGaran] English Idioms Dictionary ▲

on-the-spot
on the spot - in the place where something is happening or has just happened.
Her on-the-spot reports from war zones around the world won her several awards.
(always before noun)

[TahlilGaran] English Idioms Dictionary ▲

on the spot
to be in a difficult or embarrassing situation
The man was put on the spot when the reporter asked him about the money.

[TahlilGaran] English Idioms Dictionary ▲

on the spot
adv. or adj. phr.
1. or upon the spot At that exact time and at the same time or place; without waiting or leaving.
The news of important events is often broadcast on the spot over television.
When Tom ruined an expensive machine, his boss fired him on the spot.
Compare: AT ONCE, IN ONE'S TRACKS, THEN AND THERE.
2. informal also

[TahlilGaran] English Idioms Dictionary ▲