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1. An agreement or promise made orally or in writing not under seal; a contract.
2. A legal action seeking compensation for the nonperformance of a contract that was not officially approved or recorded.
[New Latin assūmpsit, from third person sing. perfect tense of Latin assūmere, to undertake; see assume.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Law) law (before 1875) an action to recover damages for breach of an express or implied contract or agreement that was not under seal
[C17: from Latin, literally: he has undertaken, from assūmere to assume]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. a legal action for a breach of agreement.
2. an actionable promise.
[1605–15; < Latin: he has taken up]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.