[before 1000; Middle English crak(k)en (v.), crak (n.), Old English cracian to resound; akin to Middle Dutch krken, Old High German chrahhn] crack - The crack of a whip is the miniature sonic boom that occurs as the tip breaks the sound barrier. See also related terms for whip. crackPast participle: crackedGerund: crackingImperative crack crack Present I crack you crack he/she/it cracks we crack you crack they crack Preterite I cracked you cracked he/she/it cracked we cracked you cracked they cracked Present Continuous I am cracking you are cracking he/she/it is cracking we are cracking you are cracking they are cracking Present Perfect I have cracked you have cracked he/she/it has cracked we have cracked you have cracked they have cracked Past Continuous I was cracking you were cracking he/she/it was cracking we were cracking you were cracking they were cracking Past Perfect I had cracked you had cracked he/she/it had cracked we had cracked you had cracked they had cracked Future I...
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