" on "

1: having to do with;

  * e.g., " ... books on sports heroes are my favorite reading matter "

•  Synonyms : 

•  about,

•  apropos,

•  apropos of,

•  as far as,

•  as for,

•  as regards,

•  as to,

•  concerning,

•  of,

•  regarding,

•  respecting,

•  touching,

•  toward

•  Antonyms : 

• (N/A)

2: in or into contact with;

  * e.g., " ... don't lean on that ladder—you'll knock it over "

•  Synonyms : 

•  against,

•  upon

•  Antonyms : 

• (N/A)

1: toward a point ahead in space or time;

  * e.g., " ... we really must move on now if we're going to end this meeting before midnight "

•  Synonyms : 

•  ahead,

•  forth,

•  forward,

•  onward

•  Antonyms : 

• (N/A)

2: toward or at a point lying in advance in space or time;

  * e.g., " ... he's getting on in years and doesn't see or hear as well as he used to "

•  Synonyms : 

•  ahead,

•  along,

•  forth,

•  forward,

•  forwards,

•  onward

•  Antonyms : 

• (N/A)

1: not constantly or steadily over a period of time;

  * e.g., " ... It's been raining on and off all afternoon. "

•  Synonyms : 

•  intermittently,

•  off and on,

•  periodically,

•  recurrently,

•  infrequently,

•  little,

•  rarely,

•  seldom,

•  irregularly,

•  sporadically,

•  variously,

•  here and there,

•  now,

•  now and then,

•  occasionally,

•  sometimes

•  Antonyms : 

•  commonly,

•  ordinarily,

•  regularly,

•  routinely,

•  usually,

•  always,

•  consistently,

•  constantly,

•  invariably,

•  continually,

•  continuingly,

•  continuously,

•  incessantly,

•  perpetually,

•  unceasingly,

•  uninterruptedly,

•  endlessly,

•  ever,

•  interminably,

•  frequently,

•  hourly,

•  much,

•  oft,

•  often,

•  oftentimes

1: being in effective operation;

  * e.g., " ... please don't leave the sanding machine on if you're not going to be near it "

•  Synonyms : 

•  active,

•  alive,

•  functional,

•  functioning,

•  going,

•  live,

•  living,

•  operating,

•  operational,

•  operative,

•  running,

•  working

•  Antonyms : 

•  broken,

•  dead,

•  inactive,

•  inoperative,

•  kaput,

•  nonactivated,

•  nonfunctional,

•  nonfunctioning,

•  nonoperating,

•  nonoperational,

•  nonoperative

1: occurring or appearing at intervals;

  * e.g., " ... an on-and-off friendship over the years "

•  Synonyms : 

•  continual,

•  intermittent,

•  periodic,

•  periodical,

•  recurrent,

•  recurring

•  Antonyms : 

•  constant,

•  continuous,

•  incessant,

•  unceasing

1: being in agreement with the truth or a fact or a standard;

  * e.g., " ... an economic forecast for three percent growth that turned out to be entirely on-target "

•  Synonyms : 

•  accurate,

•  bang on,

•  correct,

•  dead-on,

•  exact,

•  good,

•  precise,

•  proper,

•  right,

•  so,

•  spot-on,

•  true,

•  veracious

•  Antonyms : 

•  false,

•  improper,

•  inaccurate,

•  incorrect,

•  inexact,

•  off,

•  untrue,

•  wrong

1: without delay;

  * e.g., " ... Now that I got my brakes fixed my car stops on a dime. "

•  Synonyms : 

•  bang,

•  directly,

•  forthwith,

•  headlong,

•  immediately,

•  incontinently,

•  instantaneously,

•  instanter,

•  instantly,

•  now,

•  PDQ,

•  plumb,

•  presently,

•  promptly,

•  pronto,

•  right,

•  right away,

•  right now,

•  right off,

•  straightaway,

•  straight off,

•  straightway

•  Antonyms : 

• (N/A)

1: as the result of;

  * e.g., " ... She was barred from the establishment on account of her misconduct. "

•  Synonyms : 

•  because of,

•  due to,

•  owing to,

•  through,

•  with

•  Antonyms : 

• (N/A)

1: in every place or in all places;

  * e.g., " ... They agreed on all hands that a fresh start would be best for the company. "

•  Synonyms : 

•  all over,

•  everyplace,

•  everywhere,

•  far and wide,

•  high and low,

•  throughout

•  Antonyms : 

•  nowhere

1: not undergoing a change in condition;

  * e.g., " ... She's kept her credit score on an even keel so she hopes to be able to buy a car soon. "

•  Synonyms : 

•  changeless,

•  constant,

•  stable,

•  stationary,

•  steady,

•  unchanging,

•  unvarying

•  Antonyms : 

•  capricious,

•  changeful,

•  changing,

•  fickle,

•  fluctuating,

•  fluid,

•  inconstant,

•  mercurial,

•  skittish,

•  uncertain,

•  unpredictable,

•  unsettled,

•  unstable,

•  unsteady,

•  varying,

•  volatile