Question

1. what does the root in repulse mean?

to send
to place
to try
to drive

Explanation:

The word "repulse" has the root "puls" (from Latin "pellere" or related roots, but "puls" - related roots like "pel-" mean "to drive"). "Repulse" means to drive back. So the root's meaning is "to drive".

Answer:

to drive