on

  • (verb): To switch on
  • (adjective): In the state of being active, functioning or operating.
  • (adjective): Performing according to schedule; taking place.
  • (adjective): Fitted; covering; being worn.
  • (adjective): (usually negative) Acceptable, appropriate.
  • (adjective): Destined, normally in the context of a challenge being accepted; involved, doomed.
  • (adjective): Having reached a base as a runner and being positioned there, awaiting further action from a subsequent batter.
  • (adjective): Within the half of the field on the same side as the batsman's legs; the left side for a right-handed batsman.
  • (adjective): Menstruating.
  • (adverb): To an operating state.
  • (adverb): So as to cover or be fitted.
  • (adverb): Along, forwards (continuing an action).
  • (adverb): In continuation, at length.
  • (adverb): (obsolete in the US) Later.
  • (adverb): Of betting odds, denoting a better-than-even chance. See also odds-on.
  • (preposition): Positioned at the upper surface of, touching from above.
  • (preposition): Positioned at or resting against the outer surface of; attached to.
  • (preposition): Expressing figurative placement or attachment.
  • (preposition): Denoting performance or action by contact with the surface, upper part, or outside of anything; hence, by means of; with.
  • (preposition): At or in (a certain region or location).
  • (preposition): Near; adjacent to; alongside.
  • (preposition): Supported by (the specified part of itself).
  • (preposition): So as to impart force to.
  • (preposition): So as to impact; against.
  • (preposition): Covering.
  • (preposition): (with certain modes of transport, especially public transport) Inside (a vehicle) for the purpose of travelling.
  • (preposition): At the date of.
  • (preposition): Some time during the day of.
  • (preposition): At a given time after the start of something; at.
  • (preposition): Dealing with the subject of; about; concerning.
  • (preposition): In the possession of.
  • (preposition): Because of, or due to.
  • (preposition): Upon; at the time of (and often because of).
  • (preposition): Paid for by.
  • (preposition): Indicating a means or medium.
  • (preposition): Indicating the target of, or thing affected by, an event or action.
  • (preposition): Toward; for; indicating the object of an emotion.
  • (preposition): Indicating a means of subsistence.
  • (preposition): Away or occupied with (e.g. a scheduled activity).
  • (preposition): Regularly taking (a drug).
  • (preposition): Under the influence of (a drug).
  • (preposition): Having identical domain and codomain.
  • (preposition): Having V^n as domain and V as codomain, for some set V and integer n.
  • (preposition): Generated by.
  • (preposition): In addition to; besides; indicating multiplication or succession in a series.
  • (preposition): Of
  • (preposition): Indicating dependence or reliance; with confidence in.
  • (preposition): At the peril of, or for the safety of.
  • (preposition): In the service of; connected with; of the number of.
  • (preposition): By virtue of; with the pledge of.
  • (preposition): To the account or detriment of; denoting imprecation or invocation, or coming to, falling, or resting upon.
  • (preposition): (especially when numbers of combatants or competitors are specified) Against; in opposition to.
  • Can you on the light?
  • All the lights are on, so they must be home.
  • Are we still on for tonight?
  • I was trying to drink out of the bottle while the top was still on!
  • You can't do that; it's just not on.