A primitive root; properly, to plait together, i.e. (figuratively) to augment (especially in number or quantity, to accumulate) -- in abundance, multiply.
H3527. kabar
I. [כָּבַר] verb be much, many (Assyrian kabâru, be great, mighty; kabru, great, huge; Arabic be great, in body, rank, or age, great, noble, aged; Ethiopic be honoured, magnified; honoured, glorious; Sabean epithet כבר HalEt. Sab. JAs Dec. 1874, No. 90; Syriac , for Hebrew הִרְבָּה רָבָה,, (rare) much; Zinjirli be abundant, numerous) —
Hiph`il (only Elihu) make many, Job 35:16 יַכְבִּר מִלִּין דַעַת בִּבְלִי (compare אֲמָרָיו וְיֶרֶב 34:37) > make great, BuBeitr. 138, comparing 8:2; מַכְבִּיר with the force of a substantive (Ew§ 160 c) 36:31 אכל יתן לְמַכְֶבִּיר giveth food in abundance (= prose לָרֹב, e.g. 2 Chronicles 11:23).