Lexical Definition

‎יַחַד‎ yachad (yakh'-ad) unitedness H:N-M
from ‎יָחַד‎

alike, at all (once), both, likewise, only, (al-) together, withal.

n m
1) union, unitedness
adv
2) together, altogether, all together, alike

See Greek: ὁμοθυμαδόν · ὁμοθυμαδόν

Brown-Driver-Briggs

‎יַ֫חַד‎45 noun [masculine] unitedness.

1. as substantive only 1Chr 12:17* (peculiar) ‎יִהְיֶהלִּֿי עֲלֵיכֶֹם לֵבָב לֳי֑חַד‎ I will have a heart toward you for unitedness, i.e. my heart shall be ready to become one with yours (compare v.1Chr 12:38* ‎לב אחד‎).

2. elsewhere always in accusative as adverb in union, together (compare Arabic in accusative with suffix in his solitariness = alone) —
a. together, of community in action, place, or time (often combined, but one usually more prominent than the others); (1) in action, Job 38:7 ‎בְּרָןיַֿחַד‎ ‎כּוֺכְבֵי אֵל‎ when the stars of God shouted together; Ezra 4:3 we together will build (opposed to you), with ‎נִלְחַם‎ 1Sam 17:10, ‎נִשְׁפַּט‎ Isa 43:26 (2) in place 1Sam 11:11 ‎ולא נשׁארו בם שׁנים יָ֑חַד‎; 2Sam 10:15 ‎וַיֵּאָֽסְפוּ יָחַ֑ד‎ Ps 2:2; Ps 31:14*; Ps 88:18*; Ps 1 ‎שֶׁבֶת יַחַד‎ Isa 50:8, as predicate Mic 2:12 ‎יַחַד אֲשִׂימֶנּוּ‎; (3) in place and time at once. 2Sam 21:9 ‎וַיִּפְּלוּ יָ֑חַד‎ and they perished together, 2Sam 14:16 to destroy ‎אתי ואת בני יחד‎; (4) of time alone (poetry) Isa 42:14 ‎אֶשֹּׁם וְאֶשְׁאַף יחד‎ I will gasp and pant together, Isa 45:8; Job 6:2; Job 17:16 **read ‎נֵחָ֑ת‎ for ‎יַחַ֑ת‎; ‎יַחַד‎ here will then belong to (1).; Ps 141:10 ‎יחד אנכי עד אעבור‎ while I at the same time pass on.
b. all together, altogether (poetic synonym of ‎כֻּלָּם‎ but more forcible, suggesting often, especially with ‎כל‎, all at once, as well as altogether), Isa 44:11 ‎יפחדו יבשׁו יחד‎ (compare Ps 40:15*), Ps 62:10* ‎הֵמָּה מֵהֶבֶל יַחַד‎ they are all together (made) of vanity, Isa 22:3 ‎כל קציניך נדדו יחד‎ (with ‎כל‎ also Ps 41:8*; Job 34:15): often in poetry beginning a clause with emphasis, Deut 33:5; Job 3:18 ‎יחד אסירים שׁאננו‎ Job 16:10; Job 19:12 ‎יחד יבאו‎ ‎גדודיו‎, Job 24:4; Job 31:38; Ps 41:8*; Ps 98:8; Hos 11:7 (with a negative), vHos 11:8 in connection with a suffix, or object of a verb, Isa 27:4 ‎אציתנה יָ֑חַד‎ I will burn it altogether, Ps 33:15 ‎הַיֹּצֵר יַחַד לִבָּם‎ who formeth the hearts of them all together, Ps 74:6; Ps 74:8; Job 10:8 ‎יַחַד סָבִיב‎ altogether round about (but read perhaps with ᵐ5 ᵑ6 Del Di ‎אַחַר תִסּוֺב‎), Job 40:13.
c. together, in the sense of alike, the one as well as the other, Ps 49:3*; Ps 49:11* ‎יחד‎ ‎כסיל ובער יאבדו‎ Job 21:26; Job 34:29. More frequent is

‎יַחְדָּו‎92 (Jer 46:12; Jer 46:21; Jer 49:3 ‎יַחְדָּיו‎), adverb together (properly (in) his or its unitednesses (compare Arabic alone; and for the form ‎אַשְׁרָיו‎), but, the origin of the term. being forgotten, applied generally as an adverb, without regard to number, gender, or person: so Ges Ol§ 135c Sta§ 370a) — together:
a. of community in action, Ps 34:4* ‎ונרוממה שׁמו יחדו‎ let us exalt his name together, Isa 52:9, with ‎נוֺעַץ‎ take counsel, Isa 45:21; Ps 71:10; Ps 83:6*; Neh 6:7 ‎נִצָּה‎ to struggle Deut 25:11 in place, as with ‎ישׁב‎ Gen 13:6; Deut 25:5, ‎הלך‎ Gen 22:6; Gen 22:8; Amos 3:3, ‎בוא‎ Jer 3:18; Job 9:32, ‎קרב‎ Isa 41:1, ‎נפל‎ 2Sam 2:16, ‎אכל‎ Judg 19:6; Jer 41:1, ‎התקבץ‎ Josh 9:2, ‎נאסף‎ Judg 6:33, etc.; Deut 22:10 ‎בשׁור ובחמור יחדו‎ coupling pairs, and so strengthening ‎וְ‎ (mostly in poetry), vDeut 22:11; Amos 1:15 ‎הוא ושׂריו יחדו‎ (compare Jer 48:7 Qr [Kt](/btb/not_created.html) ‎יחד‎], Jer 49:3) Jer 6:11; Jer 6:12 ‎׳‎‎שׂדות ונשׁים י‎, vJer 6:21 (accents), Jer 13:14; Jer 31:8; Jer 31:13; Jer 50:4; Jer 50:33; Isa 41:19, compare Isa 65:7 in time (rare: but see below), Ps 4:9* in peace ‎יחדו אשׁכבה ואישׁן‎ will I at once lie down and sleep (i.e. lie down and fall asleep immediately).
b. emphatic (especially in poetry) = all together 1Sam 31:6; Isa 10:8 ‎הלא שׂרי יחדו מלכים‎ are not my princes all together, all alike, kings? Isa 18:6; Isa 40:5; Isa 41:20; Isa 41:23; Isa 45:16 (|| ‎כֻּלָּם‎), Isa 46:2 ‎קרסו כרעו יחדו‎, Isa 48:13; Isa 66:17; Ps 14:3 (|| ‎הַכֹּל‎), Ps 19:10* ‎צדקו יחדו‎ (of J.'s ordinances), Ps 35:26; Ps 37:38 sometimes (like ‎יַחַד‎ b) suggesting all at once, as well as all together, Exod 19:8 ‎ויענו‎ ‎כל העם יחדו‎ (so, with ‎כל‎, Isa 22:3; Isa 31:3; Zech 10:4), Isa 1:28; Isa 1:31 ‎ובערו שׁניהם יחדו‎. Prefixed to a clause (like ‎יחד‎), Deut 33:17 (compare ‎יחד‎ vDeut 33:5), Isa 9:20*; Isa 11:7; Isa 11:14; Isa 31:3; Isa 43:17; Isa 45:16; Isa 52:8; Isa 51:38; (strengthening ‎לָמוֺ‎)
c. alike, the one as well as the other, Deut 12:22 (= Deut 15:22) the unclean and the clean alike may eat it, 1Sam 30:24 ‎יַחְדָּו יַחֲ˜לֹקוּ׃‎ they shall share together, i.e. alike.

Brown-Driver-Briggs References

Book Refs
Genesis 13:6 · 22:6 · 22:8
Exodus 19:8
Deuteronomy 12:22 · 15:22 · 22:10 · 22:11 · 25:5 · 25:11 · 33:5 · 33:17
Joshua 9:2
Judges 6:33 · 19:6
1 Samuel 11:11 · 17:10 · 30:24 · 31:6
2 Samuel 2:16 · 10:15 · 14:16 · 21:9
1 Chronicles 12:17* · 12:38*
Ezra 4:3
Nehemiah 6:7
Job 3:18 · 6:2 · 9:32 · 10:8 · 16:10 · 17:16 · 19:12 · 21:26 · 24:4 · 31:38 · 34:15 · 34:29 · 38:7 · 40:13
Psalms Chapter 1 · 2:2 · 4:9* · 14:3 · 19:10* · 31:14* · 33:15 · 34:4* · 35:26 · 37:38 · 40:15* · 41:8* · 49:3* · 49:11* · 62:10* · 71:10 · 74:6 · 74:8 · 83:6* · 88:18* · 98:8 · 141:10
Isaiah 1:28 · 1:31 · 9:20* · 10:8 · 11:7 · 11:14 · 18:6 · 22:3 · 27:4 · 31:3 · 40:5 · 41:1 · 41:19 · 41:20 · 41:23 · 42:14 · 43:17 · 43:26 · 44:11 · 45:8 · 45:16 · 45:21 · 46:2 · 48:13 · 50:8 · 51:38 · 52:8 · 52:9 · 65:7 · 66:17
Jeremiah 3:18 · 6:11 · 6:12 · 6:21 · 13:14 · 31:8 · 31:13 · 41:1 · 46:12 · 46:21 · 48:7 · 49:3 · 50:4 · 50:33
Hosea 11:7 · 11:8
Amos 1:15 · 3:3
Micah 2:12
Zechariah 10:4