Bible Lexicons

לָעַג properly to stammer (Syriac ܠܥܶܓ, also ܠܓܰܥܝܶܓ, لَغْلَغَ, لَخْلَجَ Eth. ላዕላዕ and ላእላእ፡ stammerer, compare לָעַז), hence

(1)  to speak barbarously, in a foreign language (compare לוּץ), comp. Niphal, and transp. עִלֵּג, عِلْجُ speaking barbarously.

(2) to mock at, to deride, prop. to imitate any one’s voice in stammering, by way of derision (Chald. לַגְלַג to mock. Compare transp. Greek γελάω, also χλεύη, χλευάζω, Goth. hlahjan, lahhan, Pers. لاغيدن to joke, Germ. lachen, to laugh). Proverbs 1:26 followed by a dat. of pers. Proverbs 17:5. Psalms 2:4, אֲדנָי יִלְעַג לָמוֹ “the Lord will mock at them,” shall despise them as enemies who can accomplish nothing; 59:9 Job 22:19 

Niphal, to speak barbarously, in a foreign language, Isaiah 33:19.

Hiphil, i.q. Kal No. 2, to mock, to deride, Job 21:3 followed by לְ Psalms 22:8; Nehemiah 2:19 followed by בְּ 2 Chronicles 30:10. Hence

אֶ֝לְעַ֗ג אלעג וַ֝תִּלְעַ֗ג וַיַּלְעִ֣גוּ וַיַּלְעֵ֖ג וּלְלַ֖עַג וּמַלְעִגִ֖ים וילעג וילעגו וללעג ומלעגים ותלעג יִלְעֲגוּ־ יִלְעַג־ יִלְעָֽג׃ יַלְעִ֣גוּ ילעג־ ילעג׃ ילעגו ילעגו־ לָעֲגָ֣ה לֹעֵ֣ג לֹעֵ֥ג לעג לעגה נִלְעַ֥ג נלעג תִּ֝לְעַ֗ג תִּֽלְעַ֣ג תַלְעִֽיג׃ תלעג תלעיג׃ ’el‘aḡ ’el·‘aḡ elAg lā‘ăḡāh lā·‘ă·ḡāh laaGah lō‘êḡ lō·‘êḡ loEg nil‘aḡ nil·‘aḡ nilAg ṯal‘îḡ ṯal·‘îḡ talIg til‘aḡ til·‘aḡ tilAg ū·lə·la·‘aḡ ū·mal·‘i·ḡîm ūləla‘aḡ uleLaag ūmal‘iḡîm umaliGim vaiyalEg vaiyalIgu vattilAg wat·til·‘aḡ wattil‘aḡ way·yal·‘êḡ way·yal·‘i·ḡū wayyal‘êḡ wayyal‘iḡū yal‘iḡū yal·‘i·ḡū yalIgu yil‘āḡ yil‘aḡ- yil‘ăḡū- yil·‘ă·ḡū- yil·‘āḡ yil·‘aḡ- yilAg yilagu