optional; voluntary; arbitrary; arbitrary
whenever you want; any time you like
liver; innards; courage; spirit; crux; essential point
exhaustion; fatigue; impoverishment; (financial) exhaustion; ruin
nothing but; none other than
shuddering; shivering; trembling; being horrified; being disgusted
to give up; to admit defeat; to throw in the towel
to stick into (of something with a sharp point); to prick; to pierce; to resonate emotionally; to move
the number of flat things; win-loss difference which influences the ranking of wrestlers
punishment; penalty; penal regulations; penal provisions; penal code
zero; 0; nought; nothing; zilch
severe; strict; tough; hard
painful; sore; cringy; embarrassing
painful; bitter; tough; difficult; cruel; harsh
strong arm; stout arm; ability to carry out a difficult job; capable person
pitcher; pitcher (container); jug
to exercise one's talent; to display one's ability
thin arm; slender arm; slender means; meager ability to earn a living
pitching in consecutive games; making multiple posts (on a website); posting multiple comments
amplification; magnification; amplification; making larger
giving up; quitting; surrendering
rest; break; recess; intermission
freely; frankly; without reserve
to be absent; to take a day off; to rest; to have a break; to go to bed; to (lie down to) sleep
willpower; guts; determination; character; nature; disposition
I wish I had ...; I should have ...; it would have been better if I had ...
being a poor loser; unwillingness to admit defeat; sour grapes
sincerely; earnestly; wholeheartedly; repeatedly; over and over; again and again
annoyance; irritation; vexation; abdominal spasms; convulsions; cramps
threat; bird-scaring device (scarecrow, gun, etc.)
morning; forenoon; just before noon
holiday; day off; sleep; rest; good night
practical problem; practical matter