, aor. كَثُرَ, (Ṣ, Mṣb, Ḳ,) inf. n. كَثْرَةٌ (Mṣb, TA) and كِثْرَةٌ, or this is erroneous, (Mṣb,) [and perhaps كُثْرَةٌ, and كُثْرٌ, or these are simple substs., (see كَثْرَةٌ, below,)] and كَثَارَةٌ, (TA,) It was, or became, much, copious, abundant, many, numerous, great in number or quantity; it multiplied; it accumulated. (Ṣ, Ḳ, TA.) كَثُرُوا عَلَيْهِ فَغَلَبُوهُ [They multiplied against him and overcame him.] (TA in art. غرق). [كَثُرَ مِنْهُ كَذَا Such a thing proceeded from him, or was done by him, much, or often.] See also 4.
كَاثَرُوهُمْ فَكَثَرُوهُمْ: see 3.