prohibitive
adj.adj. too expensive or difficult to be practical. You use this when something is so costly or hard that you cannot afford or manage to do it.
adj. exceeding the limits of what is reasonable or affordable; making an action or purchase impossible due to high cost or difficulty. Often used in economic or technical contexts to describe a barrier to entry.
The cost of the new car is prohibitive for most families.
The high cost of living in the city makes it prohibitive for young professionals to rent an apartment.
The technical complexity of the software made it prohibitive for small businesses to implement without significant external support.
From Middle English prohibitif, prohibityve, from Medieval Latin prohibitīvus, from prohibit-, past-participle stem of Latin prohibēre. By surface analysis, prohibit + -ive.