WordWeb Online

1. Preventing realization or attainment of a desire
   - frustrating, frustrative

1. An act of hindering someone's plans or efforts
   - frustration, foiling

1. Hinder or prevent (the efforts, plans, or desires) of
   "thwart your opponent"
   - queer, spoil, scotch, foil, cross, frustrate, baffle, bilk

Derived forms: thwartings

See also: preventative, preventive, thwarter

Type of: forbid, foreclose, forestall, hinderance, hindrance, interference, preclude, prevent