Strong's Definition
from 5068; properly (abstractly) spontaneity, or (adjectively) spontaneous; also (concretely) a spontaneous or (by inference, in plural) abundant gift
KJV Usage: free(-will) offering, freely, plentiful, voluntary(-ily, offering), willing(-ly), offering)
STEPBible — Tyndale Abridged Hebrew Lexicon
נְדָבָה (ne.da.vah) — voluntariness. 1) voluntariness, free-will offering 1a) voluntariness 1b) freewill, voluntary, offering
UBS Dictionary of Biblical Hebrew
noun f · נדב
Willing
out of free will, willingly, in abundance = state in which humans are willing to perform a certain task and show that by their actions
DEU 23:24 · 2CH 35:8 · PSA 54:8 · PSA 68:10 · PSA 110:3 · HOS 14:5
Sacrifice | ≈ זֶבַח · זָהָב · כֶּסֶף · מַתָּנָה · מִנְחָה · מַעֲשֵׂר · נֶדֶר · נֶסֶךְ · עֹלָה · קָרְבָּן · שֶׁלֶם · תְּרוּמָה
voluntary offering, freewill offering = something offered to God as a free gift without any obligation
EXO 35:29 · EXO 36:3 · LEV 7:16 · LEV 22:18 · LEV 22:21 · LEV 22:23 · LEV 23:38 · NUM 15:3 · NUM 29:39 · DEU 12:6 · DEU 12:17 · DEU 16:10 · 2CH 31:14 · EZR 1:4 · EZR 3:5 · EZR 8:28 · PSA 119:108 · EZK 46:12 · EZK 46:12 · AMO 4:5
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
נְדָבָה n.f. voluntariness, freewill offering base