إِدُّ

Also, and إِدَّةٌ, A wonder, or wonderful thing: (M, L, K:) a very evil, abominable, severe, thing, or affair: (S, M, A, L, K:) a calamity; (S, A, L, K,) or thus the former word signifies; (M;) as also أَدُّ, (as in the copies of the K,) or ادُّ, [originally ادِدً] of the measure فَاعِلْ: (so in the S and L:) plural (of إِدُّ M, TA) إِدادُ (K, TA,) or أَدَادُ (T, CK, [but this, if correct, is a quasi-plural n.,]) or ادَادُ (M,) and (of إِدَّةٌ, S, M) إِدَدٌ (T, S, M, K.) You say also أَمْرْإِدُّ [meaning as above], using إِدُّ as an epithet, according to Lh. (M.) And دَاهِيَةٌ إِدَّةٌ [A very evil, abominable, or severe, calamity]. (A.) Hence the saying in the Qur'an, 19:91, لَقَدْ جِيءْتُمْ شَيْيءًا إِدًّا Verily ye have done a very evil, or abominable, thing: (S, M: *) or, according to one reading, أَدُّا; both meaning great, or grievous: and some of the Arabs say, بِشَىْءٍ ادٍّ, which means the same. (T, TA.)