adverb
In a direction away from the speaker or other reference point.
Into a state of non-operation or non-existence.
So as to remove or separate, or be removed or separated.
(theater) Offstage.
Used in various other ways specific to individual idiomatic phrases, e.g. bring off, show off, put off, tell off, etc. See the entry for the individual phrase.
adjective
(predicative only) Inoperative, disabled.
(predicative only) Cancelled; not happening.
Not fitted; not being worn.
Denoting something faulty, unsatisfactory, objectionable etc.
(in phrases such as 'well off', 'poorly off', 'comfortably off', etc., and in 'how?' questions) Circumstanced.
Started on the way.
Far; off to the side.
Temporarily not attending a usual place, such as work or school, especially owing to illness or holiday.
Designating a time when one is not strictly attentive to business or affairs, or is absent from a post, and, hence, a time when affairs are not urgent.
(predicative only) Presently unavailable. (of a dish on a menu)
(British, in relation to a vehicle) On the side furthest from the kerb (the right-hand side if one drives on the left).
(cricket) In, or towards the half of the field away from the batsman's legs; the right side for a right-handed batsman.
preposition
Not positioned upon, or away from a position upon.
Detached, separated, excluded or disconnected from; away from a position of attachment or connection to.
Outside the area or region of.
Temporarily not attending (a usual place), especially owing to illness or holiday.
Used to indicate the location or direction of one thing relative to another, implying adjacency or accessibility via.
Removed or subtracted from.
No longer wanting or taking.
(colloquial, more properly 'from') Out of the possession of.
Placed after a number (of products or parts, as if a unit), in commerce or engineering.
(slang, drugs) Under the influence of.
(informal) As a result of.
verb
(transitive, slang) To kill.
(transitive, Singapore, Philippines, Nigeria) To switch off.
noun
(usually in phrases such as 'from the off', 'at the off', etc.) Beginning; starting point.