aperiodically

/ˌeɪ.pɪr.iˈɑː.dɪ.kli/
adverb
  1. In a way that does not happen at regular intervals; irregularly.
    • The satellite sends signals aperiodically, only when it detects unusual activity.
    • Her visits to the gym were aperiodically scheduled, making it hard to form a habit.
    • The old clock ticked aperiodically, sometimes pausing for minutes.
Antonyms
What does "aperiodically" mean? | whatsthatwordmean | whatsthatwordmean