"irregularly" in the adverb sense
1. irregularly
at an uneven rate
"the patient is breathing irregularly"
2. irregularly
having an irregular form
"irregularly shaped solids"
3. irregularly, on an irregular basis
in an irregular manner
"her letters arrived irregularly"
4. irregularly
in an irregular manner
"the stomach mucosa was irregularly blackened"
Source: WordNet® (An amazing lexical database of English)
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