Collocations for refusal - noun

absolute, adamant, blank (BrE), blunt, complete, flat, outright, point-blank, utter
the panel's point-blank refusal to release the information
her utter refusal to do anything to help

continued, continuing, deliberate, obstinate, persistent, repeated, resolute, staunch, steadfast, stubborn, wilful/willful
the enemy's steadfast refusal to accept defeat

polite
apparent
initial
first (BrE)
If you decide to sell your car, I hope you'll give me first refusal (= the opportunity to buy it before it is offered to others).

be met by, be met with
Her appeals for funds to support the cause were met with outright refusals.

accept
He accepted my refusal with a shrug.

refusal by, refusal of
a refusal by a patient to accept the recommended treatment

a refusal of consent (law, BrE)
a refusal of consent to blood transfusions

refusal on … grounds (esp. BrE)
their refusal on religious grounds to perform military service