all of a sudden, all at once; suddenly; abruptly / in one fell swoop, all at once

(idiomatic) a rush; a hurry

(baseball) home run

punch (a hit with the fist) / lightning, ad hoc, shock / knuckleduster, brass knuckles

rabbit punch (chopping punch to the back of the neck or head) / whiplash (injury to the upper spine connected to a violent jerk of the head)

lash, whiplash / boost

(historical) stirrup cup / (colloquial) one for the road

headbutt / header / whim, impulse

(figurative, idiomatic, colloquial) helping hand

this time, this time round, in this case / truly, actually, really; in fact