きっぱり (translations)→ absolutely assertion boldly determined firmly instantly outright sharply stoutly tersely
きびしい (translations)→ acid carefully clear-cut disagreeable grim high intense real severe sharp terrible
こちこちの (translations)→ outsized stodgy
厳しい (translations)→ acerbic acrimonious adamantine astringent awful difficult firm hard hard-time harsh heavy hurt implacable maximum monastic peppery precarious restrain rigorous rocky stern strict torrid trying