pinky swearing (linking little fingers to confirm a promise)

to use / to employ / to make use of, to apply / to spend

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

he; boyfriend

ken, a game played with the hands; a game of hands; in Italian, mor(r)a, a game in which two (or more) players each suddenly display a hand showing zero to five fingers and call out what they think will be the sum of all fingers shown.

(martial arts) used in the names of styles, or moves that involve punching

a fist / any of the martial arts that use the fists for striking, such as 空手 (karate) / any of several finger-shape games, including じゃんけんぽん (jankenpon, “rock paper scissors”)