on the spot

US /ɑn ðə spɑt/
UK /ɑn ðə spɑt/
"on the spot" picture
1.

immediately; at once

:
He had to make a decision on the spot.
The police arrested the thief on the spot.
2.

in a difficult situation from which it is hard to escape

:
His boss put him on the spot by asking about the missing funds.
I was put on the spot when asked to sing at the party.