List of 426 Sets of Synonyms - How they Differ - Total of 2307 Words - 286

SYNONYMS: periodic, sporadic, intermittent, occasional, fitful.
These adjectives all mean recurring or reappearing now and then.

Something periodic occurs at regular or at least generally predictable intervals: periodic feelings of anxiety.
Sporadic implies appearance or occurrence in scattered, irregular, unpredictable, or isolated instances: a city subjected to sporadic bombing raids.
Intermittent describes something that stops and starts at intervals: intermittent rain showers.
What is occasional happens at random and irregularly: occasional outbursts of temper.
Something fitful occurs in spells and often abruptly: fitful bursts of energy.