In an irregular manner; without rule, method, or order.(adverb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "irregularly" in a sentence
"Here, then, is what I was able to note immediately after the decapitation: the eyelids and lips of the guillotined man worked in irregularly rhythmic contractions for about five or six seconds … I waited for several seconds."
"Here, in short, irregularly set out lines of script, "Mr.. Plunket Greene, Miss Ponsonby, Mr. Edward Gathorne-Hardy and Mr. Brian Howard" requested the pleasure of the invitee's company at St George's Swimming Baths, Buckingham Palace Road, at 11 o'clock, p.m. on Friday,"
"Now, if your engine runs irregularly, that is if it runs up to"