A primitive root; to strike with a sting (as a serpent); figuratively, to oppress with interest on a loan -- bite, lend upon usury.
H5391. nashak
נָשַׁךְ verb bite (Late Hebrew = Biblical Hebrew, but also transposed נְכַשׁ Hiph`il); Assyrian našâku DlHWB 486; נְכֵית ᵑ7 (especially of snakes); Syriac , ; Ethiopic Di642; BaZMG xliii (1889), 188 compare Arabic , undo threads, untwist rope, disintegrate, dissolve); —
Qal Perfect3masculine singular נָשַׁךְ Numbers 21:9, suffix וּנְשָׁכוֺ consecutive Amos 5:19, וּנְשָׁכָם consecutive 9:3; Imperfect3masculine singular יִשֹּׁךְ Ecclesiastes 10:11, יִשָּׁ֑ךְ Proverbs 23:32, suffix יִשְּׁכֶנּוּ Ecclesiastes 10:8; Participle active נשֵׁךְ Genesis 49:17; plural נשְׁכִים Micah 3:5, suffix נשְׁכֶיךָ Habakkuk 2:7; passive נָשׁוּךְ Numbers 21:8; — bite, chiefly of serpent, with accusative, Amos 5:19; 9:3; Genesis 49:17 (poem in J), Numbers 21:8 (passive participle, absolute), 21:9, Ecclesiastes 10:8 also 10:11 (absolute), Proverbs 23:32 (simile of wine); figurative of prophets ׳הַנּ בְּשִׁנֵּיהֶם Micah 3:5 who are biting with their teeth, and crying, Peace! figurative of oppression, etc., נשְׁכֶיךָ Habakkuk 2:7 (with play on sense thy debtors, those that give thee interest).
Pi`el Perfect3plural אֶתְכֶם וְנִשְּׁכוּ Jeremiah 8:17 and they shall bite you fatally (figurative); Imperfect3masculine plural אֶתהָֿעָם וַיְנַשְּׁכוּ Numbers 21:5 and they bit the people fatally(both of serpents).
[נָשַׁךְ] verb denominative pay, give interest (compare GerberVerba denominative 89); —
Qal Imperfect3masculine singular יִשָּׁ֑ךְ Deuteronomy 23:20 interest of anything off which one giveth interest (compare Dr).
Hiph`il make one give interest; Imperfect2masculine singular תַּשִּׁיךְ Deuteronomy 23:20 ( + accusative of congnate meaning with verb) 23:21; 23:21, all with לְ person