spotty
Definitions
Marked with or characterized by spots.
Occurring at irregular intervals; uneven in quality or performance.
Affected by acne or skin blemishes.
Examples
The cell phone reception in the mountains was quite spotty, making it difficult to maintain a clear call.
His academic record has been rather spotty, with high marks in science but failing grades in history.
Synonyms
uneven irregular patchy inconsistent erratic speckled dotted