prohibitive

If something's so expensive you can't touch it, it's prohibitive. That Ferrari in the showroom? You may want it, but its price is prohibitive.

Prohibitive originally referred to something (often a law) that prohibits or forbids something, but came to mean conditions (often prices or taxes) so high or great they restrict or prevent something: "To some, the cost of child care is prohibitive." The stress is on the second syllable, just like the verb: pro-HIB-itive. If it's a matter of expense, a synonym is exorbitant.

Definitions of prohibitive
1

adj tending to discourage (especially of prices)

“the price was prohibitive
Synonyms:
prohibitory
preventative, preventive
tending to prevent or hinder

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