Irregularity of recurrence
Nouns
- irregularity, uncertainty, unpunctuality
- fitfulness etc. adj.
- capriciousness, ecrhythmus.
Adjectives
- irregular, uncertain, unpunctual, capricious, desultory, fitful, flickering
- rambling, rhapsodical
- spasmodic
- immethodical, unmethodical, variable.
Adverbs
- irregularly etc. adj.
- by fits and starts etc. (discontinuously) [Interrupted sequence.] Discontinuity.