From an unused root (akin (by permutation) to tsa'ar), meaning to dwindle; small -- little.
see HEBREW tsa'ar
H2191. zeer
זְעֵיר noun [masculine] a little (diminutive form Ol§ 180 LagBN 85) —
1 of quantity, amount (of instruction) ׳ז ז ׳שָׁם שָׁם Isaiah 28:10, 13 (in both "" קַו צַו,).
2 of time, ז ׳כַּתַּרלִֿי וַאֲחַוֶּ֑ךָּ Job 36:2.
זער (ᵑ7 Syriac, be small; Biblical Hebrew זְעֵיר √ זְער; Egyptian Aramaic זער Cooke213, Nabataean זעירא, Palmyrene זערא Lzb268 SAC49).