Synonyms of infrequently

2 Syllables
hardly, scantly
3 Syllables
jerkily, rarely, scarcely, sparingly, finely
4 Syllables
uncommonly, unpunctually, detectably, uncertainly, unfrequently, unusually
5 Syllables
disconnectedly, discontinuously, eccentrically, occasionally, sporadically, spasmodically, irregularly, intermittently