· hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"

Synonym(s): thwart, queer, spoil, scotch, foil, cross, baffle, bilk

Hypernym(s): prevent, forestall, foreclose, preclude, forbid

· treat cruelly; "The children tormented the stuttering teacher"

Synonym(s): torment, rag, bedevil, crucify, dun

Hypernym(s): harass, hassle, harry, chivy, chivvy, chevy, chevvy, beset, plague, molest, provoke

· disappointingly unsuccessful; "disappointed expectations and thwarted ambitions"; "their foiled attempt to capture Calais"; "many frustrated poets end as pipe-smoking teachers"; "his best efforts were thwarted"

Synonym(s): defeated, disappointed, discomfited, foiled, thwarted