Jumper who may carelessly drop to hasty conclusion (8)

I believe the answer is:

skydiver

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'jumper' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for skydiver that I've seen before include "one's taken off to get in position" , "Aerial jumper" , "Sporting parachutist" , "Person who performs acrobatics in upper air before opening parachute" , "High jumper?" .)

I've seen this clue in The Hindu.

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