سخت

سَخْتٌ ذ , (S, K,) originally Pers., (TA,) Vehement, or intense; (S, K;) as also ↓ سَخِيتٌ (K) and ↓ سِخْتِيتٌ. (S, K.) One says, هٰذَا حَرٌّ سَخْتٌ, (Lh, S,) or سَخْتٌ لَخْتٌ, (TA,) This is vehement, or intense, heat; a phrase well known in the language of the Arabs, who use certain Pers., or foreign, words, as, for instance, بَلَاس for مِسْح. (Lh, S, TA. [See also سَحْتٌ.]) And حَلِفٌ ↓ سِخْتِيتٌ Vehement swearing. (S.) And كَذِبٌ ↓ سِخْتِيتٌ A vehement lie: and a pure, or an unmixed, lie. (TA.) ― -b2- Also, from the Pers., Anything hard and thin or fine. (TA.)