Hard

важки́й

važkýj

(demanding a lot of effort to endure)

важки́й

važkýj

(severe)

жорстки́й

žorstkýj

(of water, high in dissolved calcium compounds)

міцни́й

micnýj

(of drink: strong)

складни́й

skladnýj

(requiring a lot of effort to do or understand)

тверди́й

tverdýj

(resistant to pressure)