[1] : The Collaborative International Dictionary of English v.0.48

breach \breach\ br=ech, n. oe. breke, breche, as. brice,
   gebrice, gebrece in comp., fr. brecan to break; akin to
   dan. braek, mhg. breche, gap, breach. see break, and cf.
   brake the instrument, brack a break .
   1. the act of breaking, in a figurative sense.
      1913 webster

   2. specifically: a breaking or infraction of a law, or of any
      obligation or tie; violation; non-fulfillment; as, a
      breach of contract; a breach of promise.
      1913 webster

   3. a gap or opening made made by breaking or battering, as in
      a wall or fortification; the space between the parts of a
      solid body rent by violence; a break; a rupture.
      1913 webster

            once more unto the breach, dear friends, once more;
            or close the wall up with our english dead. --shak.
      1913 webster

   4. a breaking of waters, as over a vessel; the waters
      themselves; surge; surf.
      1913 webster

            the lord hath broken forth upon mine enemies before
            me, as the breach of waters.          --2 sam. v.
                                                  20.
      1913 webster

   a clear breach implies that the waves roll over the vessel
      without breaking.

   a clean breach implies that everything on deck is swept
      away. --ham. nav. encyc.
      1913 webster

   5. a breaking up of amicable relations; rupture.
      1913 webster

            there's fallen between him and my lord
            an unkind breach.                     --shak.
      1913 webster

   6. a bruise; a wound.
      1913 webster

            breach for breach, eye for eye.       --lev. xxiv.
                                                  20.
      1913 webster

   7. med. a hernia; a rupture.
      1913 webster

   8. a breaking out upon; an assault.
      1913 webster

            the lord had made a breach upon uzza. --1. chron.
                                                  xiii. 11.
      1913 webster

   breach of falth, a breaking, or a failure to keep, an
      expressed or implied promise; a betrayal of confidence or
      trust.

   breach of peace, disorderly conduct, disturbing the public
      peace.

   breach of privilege, an act or default in violation of the
      privilege or either house of parliament, of congress, or
      of a state legislature, as, for instance, by false
      swearing before a committee. --mozley. abbott.
      1913 webster 

   breach of promise, violation of one's plighted word, esp.
      of a promise to marry.

   breach of trust, violation of one's duty or faith in a
      matter entrusted to one.
      1913 webster

   syn: rent; cleft; chasm; rift; aperture; gap; break;
        disruption; fracture; rupture; infraction; infringement;
        violation; quarrel; dispute; contention; difference;
        misunderstanding.
        1913 webster
see also:
break brake brack a clear breach a clean breach breach of falth 
breach of peace breach of privilege breach of promise breach of trust 

[2] : WordNet (r) 2.0

breach of promise
     n : failure to keep a promise of marriage

[3] : Moby Thesaurus II by Grady Ward, 1.0

33 moby thesaurus words for "breach of promise":
   punic faith, bad faith, barratry, breach, breach of contract,
   breach of faith, breach of privilege, breach of trust, breaking,
   contravention, dereliction, disaffection, disloyalty,
   faithlessness, falseness, falsity, fickleness, inconstancy,
   infidelity, infraction, infringement, mala fides, offense,
   recreancy, transgression, trespass, trothlessness, unfaith,
   unfaithfulness, unloyalty, unsteadfastness, untrueness,
   violation

Breach >> B Words
Breach, definition of term: Breach
breach_pag1.html

Promise >> P Words
Promise, definition of term: Promise
promise_pag1.html

Material Breach >> M Words
Material Breach, definition of term: Material Breach
material+breach_pag1.html

Breach Of Duty >> B Words
Breach Of Duty, definition of term: Breach Of Duty
breach+of+duty_pag1.html

Breach Of Contr >> B Words
Breach Of Contr, definition of term: Breach Of Contr
breach+of+contr_pag1.html

Breach Of The P >> B Words
Breach Of The P, definition of term: Breach Of The P
breach+of+the+p_pag1.html