adjectives
not in operation or operational
"the oven is off"; "the lights are off"
is similar to
not plugged in or connected to a power source
"the iron is disconnected"
below a satisfactory level
"an off year for tennis"; "his performance was off"
is similar to
not giving satisfaction
"shops should take back unsatisfactory goods"; "her performance proved to be unsatisfactory"; "life is becoming increasingly unsatifactory"; "our discussion was very unsatisfactory"
(of events) no longer planned or scheduled
"the wedding is definitely off"
in an unpalatable state
"sour milk"
not performing or scheduled for duties
"He's off every Tuesday"
is similar to
not engaged in full-time work
"inactive reserve"; "an inactive member"
adverbs
from a particular thing or place or position (`forth' is obsolete)
"ran away from the lion"; "wanted to get away from there"; "sent the children away to boarding school"; "the teacher waved the children away from the dead animal"; "went off to school"; "they drove off"; "go forth and preach"
at a distance in space or time
"the boat was 5 miles off (or away)"; "the party is still 2 weeks off (or away)"; "away back in the 18th century"
no longer on or in contact or attached
"clean off the dirt"; "he shaved off his mustache"