دَحَضَتْ رِجْلُهُ, (Ṣ, A, Ḳ,) aor. ـَ {يَدْحَضُ}, (Ṣ,) inf. n. دَحْضٌ (Ṣ, A) and دُحُوضٌ, (A, TA,) His foot slipped. (Ṣ, A, Ḳ.) And دَحَضَ said of a man, He slipped. (Mṣb.)

دَحَضَتِ الشَّمْسُ, (Ṣ, A, Ḳ,) aor. and inf. ns. as above, (TA,) ‡ The sun declined (Ṣ, A, Ḳ) towards the place of setting, (TA,) عَنْ كَبِدِ السَّمَآءُ (Ṣ) or عن بَطْنِ السمآء (A) [from the meridian]; as though it slipped. (TA.)

دَحَضَتْ حُجَّتُهُ, (Ṣ, A, Mṣb, Ḳ,) aor. ـَ {يَدْحَضُ}, (Mṣb,) inf. n. دُحُوضٌ, (Ṣ, Ḳ,) or دَحْضٌ, (Mṣb,) ‡ His argument, plea, allegation, or evidence, was, or became, null, or void. (Ṣ, A,* Mṣb, Ḳ.)

See also 4, in two places.

ادحض, (A, TA,) inf. n. إِدْحَاضٌ, (Ṣ,) He made (Ṣ, A, TA) a man's foot, (A, TA,) and a man, (TA,) to slip; (Ṣ, A, TA;) as alsoدَحَضَ↓. (TA.)

It (rain) made a place slippery. (TA.)

‡ He (God, Ṣ, Mṣb, or a man, Ḳ) annulled, or rendered null or void, an argument, a plea, an allegation, or an evidence: (Ṣ, Mṣb, Ḳ:) he rebutted it; as alsoدَحَضَ↓, inf. n. دَحْضٌ. (TA; but in this instance, only the inf. n. of the latter verb is mentioned.) Thus in the Ḳur [xviii. 54, and xl. 5], لِيُدْحِضُوا بِهِ الحَقَّ ‡ That they may, or might, rebut thereby the truth. (TA.)

دَحْضٌ A slippery place; as alsoدَحَضٌ↓ (Ṣ, Ḳ) andدَحُوضٌ↓ (O, Ḳ) andمِدْحَضٌ↓ (Freytag, from the Deewán of the Hudhalees,) [or مَدْحَضٌ?]: pl. دِحَاضٌ, (Ḳ,) [a pl. of the second,] like as جِبَالٌ is pl. of جَبَلٌ. (TA.)

Also Water that causes slipping: pl. أَدْحَاضٌ. (TA.)

دَاحِضٌ [Slipping] has for a pl. دُحْضٌ: occurring in a trad., in the phrase دُحْضُ الأَقْدَامِ, meaning † those having no firmness, or stability, nor determination, or resolution, in affairs. (TA.)

حُجَّتُهُمْ دَاحِضَةٌ, in the Ḳur [xlii. 15], means ‡ Their argument, or plea, or allegation, is null, or void: or, as IDrd says, on the authority of AO; it means مَدْحُوضَةٌ [rebutted]. (TA.)

مَدْحَضَةٌ A cause of slipping; syn. مَزَلَّةٌ. (Ḳ.) You say, هٰذِهِ مَدْحَضَةٌ لِلْقَدَمِ [This is a cause of slipping to the foot]. (A.) And مَكَانٌ مَدْحَضَةٌ, in a trad. respecting the Sirát, means A place on which the feet will not remain firm. (TA.)

مِدْحَاضٌ A place in which one slips much, or often: pl. مَدَاحِضُ. (TA.)