Strong's #2729: charad (pronounced khaw-rad')
 a primitive root; to shudder with terror; hence, to fear; also to hasten (with anxiety):--be (make) afraid, be careful, discomfit, fray (away), quake, tremble.
Brown-Driver-Briggs Hebrew Lexicon:
 
  chârad 
 
 1) to tremble, quake, move about, be afraid, be startled, be terrified
 
 1a) (Qal)
 
 1a1) to tremble, quake (of a mountain)
 1a2) to tremble (of people)
 1a3) to be anxiously careful
 1a4) to go or come trembling (with preposition)
 
 1b) (Hiphil)
 
 1b1) to cause to tremble
 1b2) to drive in terror, rout (an army)
 
  Part of Speech: verb
Relation: a primitive root
Usage:
This word is used 39 times:
Genesis 27:33: "And Isaac  trembled very exceedingly, and said, Who?"
Genesis 42:28: "in my sack: and their heart failed  them, and they were afraid, saying one to another,"
Exodus 19:16: "the people that was in the camp  trembled."
Exodus 19:18: "thereof ascended as the smoke of a furnace, and the whole mount  quaked greatly."
Leviticus 26:6: "in the land, and ye shall lie down, and none  shall make you afraid: and I will rid evil beasts out of"
Deuteronomy 28:26: "and unto the beasts of the earth, and no man  shall frighten them away."
Judges 8:12: "Zebah and Zalmunna,  and discomfited all the host."
Ruth 3:8: "And it came to pass that the man  was afraid, and turned himself: and, behold, a woman"
1 Samuel 13:7: "and all the people followed  him trembling."
1 Samuel 14:15: "and the spoilers, they also  trembled, and the earth quaked: so it was a very great"
1 Samuel 16:4: "to Bethlehem. And the elders of the town  trembled at his coming, and said, Comest thou peaceably?"
1 Samuel 21:1: "Ahimelech the priest: and Ahimelech  was afraid at the meeting of David, and said unto him, Why"
1 Samuel 28:5: "he was afraid, and his heart greatly  trembled."
2 Samuel 17:2: "is weary and weak handed,  and will make him afraid: and all the people that"
1 Kings 1:49: "that were with Adonijah  were afraid, and rose up, and went every man his way."
2 Kings 4:13: "now unto her, Behold,  thou hast been careful for us with all this"
Job 11:19: "Also thou shalt lie down,  shall make thee afraid; yea, many shall make suit unto"
Job 37:1: "At this my heart  trembleth, and is moved out of his place."
Isaiah 10:29: "they have taken up their lodging at Geba; Ramah  is afraid; Gibeah of Saul is fled."
Isaiah 17:2: "for flocks, which shall lie down, and none  shall make them afraid."
Isaiah 19:16: "shall Egypt be like unto women:  and it shall be afraid and fear because of the shaking"
Isaiah 32:11: " Tremble, be troubled, ye careless ones: strip you, and make you bare, and gird sackcloth upon"
Isaiah 41:5: "it, and feared; the ends of the earth  were afraid, drew near, and came."
Jeremiah 7:33: "and for the beasts of the earth; and none  shall frighten them away."
Jeremiah 30:10: "and Jacob shall return, and shall be in rest, and be quiet, and none  shall make him afraid."
Jeremiah 46:27: "and Jacob shall return, and be in rest and at ease, and none  shall make him afraid."
Ezekiel 26:16: "themselves with trembling; they shall sit upon the ground,  and shall tremble at every moment, and be astonished at"
Ezekiel 26:18: "Now  tremble in the day of thy fall; yea, the isles that are in the sea"
Ezekiel 30:9: "me in ships to make the careless Ethiopians  afraid, and great pain shall come upon them, as in the day"
Ezekiel 32:10: "shall be horribly afraid for thee, when I shall brandish my sword before  them; and they shall tremble"
Ezekiel 34:28: "them; but they shall dwell safely, and none  shall make them afraid."
Ezekiel 39:26: "in their land, and none  made them afraid."
Hosea 11:10: "he shall roar, then the children  shall tremble from the west."
Hosea 11:11: " They shall tremble out of Egypt, and as a dove out of the land of Assyria:"
Amos 3:6: "in the city, and the people not  be afraid? shall there be evil in a city, and the LORD"
Micah 4:4: "and under his fig tree; and none  shall make them afraid: for the mouth of the LORD of hosts"
Nahum 2:11: "walked, and the lion's whelp, and none  made them afraid?"
Zephaniah 3:13: "shall feed and lie down, and none  shall make them afraid."
Zechariah 1:21: "his head: but these are come  to frighten them, to cast out the horns of the Gentiles,"