All terms in this list:

cessation: A ceasing or discontinuance, as of action, whether temporary or final; a stop; as, a cessation of the war.

commence: To begin, start.

deter: To prevent something from happening.

hamper: to prevent from moving freely, to limit

obstruction: gets in the way of/blocks

preclude: to make impossible.

procrastinate: To put off; to delay taking action; to wait until later.

subside: To sink or fall to the bottom; to settle, as lees.

thwart: to prevent; to halt; to cause to fail; to foil; to frustrate

scuttle: to run with short hurried steps.