thwarting
thwart-ing
verb
Actively preventing someone or something from accomplishing a goal or action.
"He was thwarting their escape by blocking the door."
noun
The act of preventing someone or something from accomplishing a goal or plan.
"Their constant thwarting of plans caused much frustration."
Thesaurus
Synonyms: frustration, foiling, frustrative, preventive, preventative, frustrating