Found 2 items, similar to off-day.
English → English (WordNet) Definition: off-day off-day n : a day when things go poorly; “I guess this is one of my off-days”
English → English (gcide) Definition: off-day off-day \off-day\ n. A day when things go poorly; as, I guess this is one of my off-days. [WordNet 1.5]