A primitive root; to be frail, feeble, or (figuratively) melancholy -- desperate(-ly wicked), incurable, sick, woeful.
Englishman's Concordance
1) to be weak, sick, frail 1a) (Qal) 1a1) to be incurable 1a2) to be sick 1a3) desperate, incurable, desperately wicked, woeful, very sick (passive participle) (metaphorically) 1b) (Niphal) to be sick Part of Speech: verb A Related Word by BDB/Strong’s Number: a primitive root Same Word by TWOT Number: 135
Brown-Driver-Briggs
I. [אָנַשׁ] verbbe weak, sick (Assyrian anâšu ZimBP 56, 70; Wetzst in DePsalmen, ed. 4, 882 derive from II. אנשׁper antiphrasin; DlPr 160 identified with III. אנשׁ; see also DePsalmen, ed. 4, 904; so LagBN 60, who compare , weichliches d.h. stumpfes Schwert. It seems safer at present to keep the three distinct).
Niph`alImperfectוַיֵּאָנַ֯שׁ֑2 Samuel 12:15be sick, of child.
II. אנשׁ (compare Arabic be inclined to, friendly, social, which however NöZMG 1886, 739 thinks denominative, compare collective men, people; see on the other hand Wetzstl.c. ZimBP 20, see also LagBN 68; — hence אֲנָשִׁים plural of אִישּׁ; see also below אישׁ).
2 Samuel 12:15 HEB:אוּרִיָּ֛ה לְדָוִ֖ד וַיֵּאָנַֽשׁ׃ NAS: to David, so that he was [very] sick. KJV: bare unto David, and it was very sick. INT: Uriah's to David he was sick
Job 34:6 HEB:מִשְׁפָּטִ֥י אֲכַזֵּ֑ב אָנ֖וּשׁ חִצִּ֣י בְלִי־ NAS: My wound is incurable, [though I am] without KJV: my wound [is] incurable without transgression. INT: adversary lie is incurable archer without
Isaiah 17:11 HEB:נַחֲלָ֖ה וּכְאֵ֥ב אָנֽוּשׁ׃ ס NAS: of sickliness and incurable pain. KJV: of grief and of desperate sorrow. INT: of sickliness pain and incurable
Jeremiah 15:18 HEB:נֶ֔צַח וּמַכָּתִ֖י אֲנוּשָׁ֑ה֙ מֵֽאֲנָה֙ הֵֽרָפֵ֔א NAS: And my wound incurable, refusing KJV: and my wound incurable, [which] refuseth INT: perpetual and my wound incurable refusing to be healed
Jeremiah 17:9 HEB:הַלֵּ֛ב מִכֹּ֖ל וְאָנֻ֣שׁ ה֑וּא מִ֖י NAS: all else And is desperately sick; Who KJV: [is] deceitful above all [things], and desperately wicked: who can know INT: the heart all desperately he Who
Jeremiah 17:16 HEB:אַחֲרֶ֗יךָ וְי֥וֹם אָנ֛וּשׁ לֹ֥א הִתְאַוֵּ֖יתִי NAS: have I longed for the woeful day; KJV: thee: neither have I desired the woeful day; INT: after day the woeful Nor longed
Jeremiah 30:12 HEB:אָמַ֛ר יְהוָ֖ה אָנ֣וּשׁ לְשִׁבְרֵ֑ךְ נַחְלָ֖ה NAS: Your wound is incurable And your injury KJV: Thy bruise [is] incurable, [and] thy wound INT: says the LORD is incurable bruise is serious
Jeremiah 30:15 HEB:עַל־ שִׁבְרֵ֔ךְ אָנ֖וּשׁ מַכְאֹבֵ֑ךְ עַ֣ל ׀ NAS: Your pain is incurable. Because KJV: thy sorrow [is] incurable for the multitude INT: over affliction is incurable grief Because
Micah 1:9 HEB: כִּ֥י אֲנוּשָׁ֖ה מַכּוֹתֶ֑יהָ כִּי־ NAS: For her wound is incurable, For it has come KJV: For her wound [is] incurable; for it is come INT: for is incurable her wound for
, weichliches d.h. stumpfes Schwert. It seems safer at present to keep the three distinct). 
be inclined to, friendly, social, which however NöZMG 1886, 739 thinks denominative, compare 
collective men, people; see on the other hand Wetzstl.c. ZimBP 20, see also LagBN 68; — hence