prohibitive

1 ENTRIES FOUND:
prohibitive /proʊˈhɪbətɪv/ adjective
prohibitive
/proʊˈhɪbətɪv/
adjective
Britannica Dictionary definition of PROHIBITIVE
1 
[more prohibitive; most prohibitive] : so high that people are prevented from using or buying something
2 
US : almost certain to perform, win, etc., in the expected way
3 
formal : stopping people from using or doing something

— prohibitively

adverb