omitted in some copies of the S.1 جَسَا, (S, M, Msb, K,) aor. ـُ (M, Msb, K,) inf. n. جَسْوٌ (M, K) and جُسُوٌّ, (M, TA,) He, or it, (a man, M, TA, or a thing, Msb,) was, or became, hard, tough, rigid, or stiff: (M, Msb, K:) [see also جَسَأَ: or, said of a man,] he was, or became, hard, rough, harsh, or ungentle; contr. of لَطُفَ. (S.) And جَسَتِ اليَدُ, inf. n. جُسُوٌّ and جَسًا, The hand, or arm, was, or became, dry, or tough, or hard, (S, TA,) in the bones, with little flesh; (TA;) and in the same sense the verb is said of other things. (S.) b2: It (water)congealed, or froze. (S, TA.) b3: Also, inf. n. جُسُوٌّ, He (an old man) attained the utmost age [so that his limbs became rigid]. (S, TA.)3 جاساهُ, (K,) inf. n. مُجَاسَاةٌ, (TA.) He treated him, or regarded him, with enmity, or hostility. (K, TA.)يَدٌ جَاسِيَةٌ A hand, or an arm, dry, or tough, or hard, in the bones, with little flesh. (TA.)And دَابَّةٌ جَاسِيَةٌ القَوَائِمِ A beast having tough, or hard, legs. (TA.) And رِمَاحٌ جَاسِيَةٌ Stiff, rigid, or tough, and hard, spears. (TA.) [See also جَاسِئٌ, in art. جسأ.]