scupper
scup-per
verb
To ruin or cause to fail; to thwart.
"The bad weather scuppered our plans for a picnic."
noun
An opening in a ship's side to allow water to drain away.
"The deck was awash, but the scuppers were doing their job."
Thesaurus
Synonyms: queer, peril, endanger, expose, bushwhack, waylay, lie in wait, ambush, ambuscade, lurk