A primitive root; to plan, usually in a bad sense -- consider, devise, imagine, plot, purpose, think (evil).
Englishman's Concordance
1) to have a thought, devise, plan, consider, purpose 1a) (Qal) 1a1) to consider, fix thought upon 1a2) to purpose, devise 1a3) to plot (of evil intent) Part of Speech: verb A Related Word by BDB/Strong’s Number: a primitive root Same Word by TWOT Number: 556
Brown-Driver-Briggs
זָמַםverbconsider, purpose, devise (Aramaic זְמַם in derived conjugations; compare Arabic speak, talk (rare); Aramaic is sonuit, resonavit, the noun is tinnitus, strepitus) — only
b.of evil purpose of wicked menלעשׂות׳אשׁר יזGenesis 11:6; Deuteronomy 19:19 (with כאשׁר + infinitive), Psalm 31:14 (followed by infinitive); absolute Proverbs 30:32 ("" נבל), Psalm 17:3have I (i.e. if I have) devised evil (so De); followed by לְ person (= against) Psalm 37:12. **the text of Proverbs 30:32 is questioned by Frankenb Toy and others; see on II. נבל, below.
Genesis 11:6 HEB:כֹּ֛ל אֲשֶׁ֥ר יָזְמ֖וּ לַֽעֲשֽׂוֹת׃ NAS: which they purpose to do KJV: will be restrained from them, which they have imagined to do. INT: all which purpose to do
Deuteronomy 19:19 HEB:ל֔וֹ כַּאֲשֶׁ֥ר זָמַ֖ם לַעֲשׂ֣וֹת לְאָחִ֑יו NAS: to him just as he had intended to do KJV: Then shall ye do unto him, as he had thought to have done INT: shall do he had intended to do to his brother
Psalm 17:3 HEB:בַל־ תִּמְצָ֑א זַ֝מֹּתִ֗י בַּל־ יַעֲבָר־ NAS: nothing; I have purposed that my mouth KJV: me, [and] shalt find nothing; I am purposed [that] my mouth INT: nothing find have purposed nothing transgress
Psalm 31:13 HEB:לָקַ֖חַת נַפְשִׁ֣י זָמָֽמוּ׃ NAS: against me, They schemed to take KJV: together against me, they devised to take away INT: to take my life schemed
Psalm 37:12 HEB: זֹמֵ֣ם רָ֭שָׁע לַצַּדִּ֑יק NAS: The wicked plots against the righteous KJV: The wicked plotteth against the just, INT:plots the wicked the righteous
Proverbs 30:32 HEB:בְהִתְנַשֵּׂ֑א וְאִם־ זַ֝מּ֗וֹתָ יָ֣ד לְפֶֽה׃ NAS: yourself Or if you have plotted [evil], [put your] hand KJV: in lifting up thyself, or if thou hast thought evil, [lay] thine hand INT: exalting if have plotted hand your mouth
Proverbs 31:16 HEB: זָמְמָ֣ה שָׂ֭דֶה וַתִּקָּחֵ֑הוּ NAS:She considers a field and buys KJV:She considereth a field, and buyeth INT:considers A field and buys
Jeremiah 4:28 HEB:כִּי־ דִבַּ֙רְתִּי֙ זַמֹּ֔תִי וְלֹ֥א נִחַ֖מְתִּי NAS: I have spoken, I have purposed, And I will not change My mind, KJV: because I have spoken [it], I have purposed [it], and will not repent, INT: for have spoken have purposed nor change
Jeremiah 51:12 HEB:כִּ֚י גַּם־ זָמַ֣ם יְהוָ֔ה גַּם־ NAS: has both purposed and performed KJV: for the LORD hath both devised and done INT: for has both purposed the LORD has both
Lamentations 2:17 HEB:יְהוָ֜ה אֲשֶׁ֣ר זָמָ֗ם בִּצַּ֤ע אֶמְרָתוֹ֙ NAS: what He purposed; He has accomplished KJV: hath done [that] which he had devised; he hath fulfilled INT: the LORD what purposed has accomplished his word
Zechariah 1:6 HEB:וַיֹּאמְר֗וּ כַּאֲשֶׁ֨ר זָמַ֜ם יְהוָ֤ה צְבָאוֹת֙ NAS: of hosts purposed to do KJV: of hosts thought to do INT: and said which purposed as the LORD of hosts
Zechariah 8:14 HEB:צְבָאוֹת֒ כַּאֲשֶׁ֨ר זָמַמְ֜תִּי לְהָרַ֣ע לָכֶ֗ם NAS: Just as I purposed to do harm KJV: of hosts; As I thought to punish INT: of hosts I purposed to do provoked
Zechariah 8:15 HEB:כֵּ֣ן שַׁ֤בְתִּי זָמַ֙מְתִּי֙ בַּיָּמִ֣ים הָאֵ֔לֶּה NAS: so I have again purposed in these days KJV: So again have I thought in these days INT: so have again purposed days these
speak, talk (rare); Aramaic 
is sonuit, resonavit, the noun 
is tinnitus, strepitus) — only