Definition of "irregular" []

• Contrary to rule, accepted order, or general practice: irregular hiring practices. (adjective)
• Not conforming to legality, moral law, or social convention: an irregular marriage. (adjective)
• Not straight, uniform, or symmetrical: irregular facial features. (adjective)
• Of uneven rate, occurrence, or duration: an irregular heartbeat. (adjective)
• Deviating from a type; atypical. (adjective)

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.

• "After a preliminary sniff she embarked upon a rapid lecture on what she called my irregular and untidy habits."
• "He did not think his soul lost by going to bed at dawn, for he liked to write at night; or by doing other things at what she called irregular hours; and he must have been at least astonished on hearing himself asked, three weeks after marriage, _when he intended giving up his versifying habits_?"
• "The agency said Taylor Bean failed to disclose what it called irregular transactions that raised concerns of fraud."