Strong's #3932: la`ag (pronounced law-ag')
 a primitive root; to deride; by implication (as if imitating a foreigner) to speak unintelligibly:--have in derision, laugh (to scorn), mock (on), stammering.
Brown-Driver-Briggs Hebrew Lexicon:
 
  lâ‛ag 
 
 1) to mock, deride, ridicule
 
 1a) (Qal) to mock, deride, have in derision
 1b) (Niphal) to stammer
 1c) (Hiphil) to mock, deride
 
  Part of Speech: verb
Relation: a primitive root
Usage:
This word is used 18 times:
2 Kings 19:21: "the daughter of Zion hath despised  thee, and laughed thee to scorn; the daughter of Jerusalem hath shaken her head"
2 Chronicles 30:10: "of Ephraim and Manasseh even unto Zebulun: but they laughed them to scorn,  and mocked"
Nehemiah 2:19: "and Geshem the Arabian, heard  it, they laughed us to scorn, and despised What"
Nehemiah 4:1: "the wall, he was wroth,  and mocked the Jews."
Job 9:23: "the scourge slay suddenly,  he will laugh at the trial of the innocent."
Job 11:3: "Should thy lies make men hold their peace?  and when thou mockest, shall no man make thee ashamed?"
Job 21:3: "may speak; and after that I have spoken,  mock on."
Job 22:19: "see it, and are glad: and the innocent  laugh them to scorn."
Psalms 2:4: "in the heavens shall laugh: the Lord  shall have them in derision."
Psalms 22:7: "All they that see  me laugh me to scorn: they shoot out the lip, they shake the head,"
Psalms 59:8: "shalt laugh at them; thou shalt have all the heathen  in derision."
Psalms 80:6: "us a strife unto our neighbors: and our enemies  laugh"
Proverbs 1:26: "also will laugh at your calamity;  I will mock when your fear cometh;"
Proverbs 17:5: " Whoso mocketh the poor reproacheth his Maker: and he that is glad at calamities shall not be unpunished."
Proverbs 30:17: "The eye  that mocketh at his father, and despiseth to obey his mother, the ravens of the valley"
Isaiah 33:19: "of a deeper speech than thou canst perceive;  of a stammering that thou canst not understand."
Isaiah 37:22: "the daughter of Zion, hath despised  thee, and laughed thee to scorn; the daughter of Jerusalem hath shaken her head"
Jeremiah 20:7: "in derision daily, every one  mocketh"