必殺技: lethal technique

other person / partner / opponent

an instant / moment

a lethal technique / a fighter's finishing move, ultimate technique, or coup de grâce, often in contexts such as pro wrestling or video games

fell; throw down; knock down; cause something upright to become horizontal / kill / defeat / overthrow / avoid paying (a debt)

to a great extent

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

技: skill, ability, talent, ingenuity / 業: profession, business, trade, karma

技有り: yuko, points or the judge call to the points in judo match. Fewer points to ippon.