Definition of "Off" :
verb: kill intentionally and with premeditation
adjective: not performing or scheduled for duties
"He's off every Tuesday."
adjective: not in operation or operational
"The oven is off."
adjective: (of events) no longer planned or scheduled
"The wedding is definitely off."
adjective: below a satisfactory level
"An off year for tennis."
adjective: in an unpalatable state
adverb: no longer on or in contact or attached
"Clean off the dirt."
adverb: from a particular thing or place or position (forth' is obsolete)
"Went off to school."
adverb: at a distance in space or time
"The boat was 5 miles off (or away)."