Something irregular: found the firm's books riddled with irregularities. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "irregularity" in a sentence
"As Shelley scholar Neil Fraistat assures me, this claim of "irregularity" is rare if not unique in Shelley's work."
"The spokesman, however, said that although the vote tally affected by such an irregularity is over 3 million, "it has yet to be determined whether the amount is decisive in the election results," reported Khabaronline."
"But irregularity is even more prominent in Wordsworth's prosody."