irregularly
adverb
[ ɪˈrɛɡjʊləli ]
• in a way that is not even or balanced in shape or arrangement.
• "irregularly shaped holes"
Similar:
asymmetrically,
unevenly,
lopsidedly,
• in a manner contrary to that which is normal or established.
• "a colleague was behaving irregularly"
• (with reference to inflections of a verb or other word) in a way that does not conform to the usual rules.
• "an irregularly conjugating verb"