on the hop

Prepositional phrase

 * 1)  Playing truant from school.
 * 2) Spontaneous; unplanned.
 * 3) * 21 February 2022, Shaun Walker, Putin’s absurd, angry spectacle will be a turning point in his long reign, The Guardian:
 * It is hard to tell whether or not Putin had decided his plan for Ukraine months ago, or whether he has been making plans on the hop, but it was certainly clear that the decision on recognition had been taken well before this strange, stage-managed event.
 * 1) Unprepared; unready and unable to deal with something.
 * 1) Unprepared; unready and unable to deal with something.