Definition of «irregular intervals»

"Irregular intervals" means there is no fixed pattern or consistent time frame between two events or occurrences.

The company can pay you at irregular intervals in irregular amounts. (money.stackexchange.com)
If this happens at irregular intervals during your third trimester there is nothing to worry about. (natural-parenting-advice.com)
In the very early days, you might find that your baby demands to be fed at completely irregular intervals. (pregnancy-info.net)
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