intermittently
Definitions
At irregular intervals; not continuously or steadily.
In a way that stops and starts repeatedly.
Examples
The old engine ran intermittently, sputtering to a halt every few miles.
Rain fell intermittently throughout the afternoon, forcing us to keep moving our picnic indoors.
Synonyms
sporadically occasionally fitfully periodically irregularly off and on at intervals
Antonyms
constantly continuously perpetually incessantly uninterruptedly steadily always