Synonyms of infrequent

1 Syllable

few, stray, scant, rare, odd

2 Syllables

weekly, scanty, anier, sparsest, scarce, fewest, monthly, casual, hourly, sparse, fewer, seldom, sparser, meager

3 Syllables

iterant, stop-and-go, sporadic, orbital, limited, several, deficient, unfrequent, scattered, periodic, spasmodic, centennial, unpunctual, epochal, seasonal, unusual, uncommon

4 Syllables

occasional, nonuniform, exceptional, intermittent, irregular, insufficient, isolated

5 Syllables

semioccasional

6 Syllables

on-again-off-again