as‧tro‧nom‧i‧cal /ˌæstrəˈnɒmɪkəl◂ $ -ˈnɑː-/ adjective

1. informal astronomical prices, costs etc are extremely high

2. [only before noun] relating to the scientific study of the stars
—astronomically /-kli/ adverb:
astronomically high rents

[TahlilGaran] Dictionary of Contemporary English ▲

expensive costing a lot of money:
an expensive car
Apartments in the city are very expensive.
An underground train system is expensive to build.
high costing a lot of money.You use high about rents/fees/prices/costs. Don’t use expensive with these words:
Rents are very high in this area.
Lawyers charge high fees.
the high cost of living in Japan
dear [not before noun] British English spoken expensive compared to the usual price:
£3.50 seems rather dear for a cup of coffee.
pricey /ˈpraɪsi/ informal expensive:
The clothes are beautiful but pricey.
costly expensive in a way that wastes money:
Upgrading the system would be very costly.
They were anxious to avoid a costly legal battle.
cost a fortune informal to be very expensive:
The necklace must have cost a fortune!
exorbitant /ɪɡˈzɔːbətənt, ɪɡˈzɔːbɪtənt $ -ɔːr-/ much too expensive:
Some accountants charge exorbitant fees.
astronomical astronomical prices, costs, and fees are extremely high:
the astronomical cost of developing a new spacecraft
the astronomical prices which some people had paid for their seats
The cost of living is astronomical.
overpriced too expensive and not worth the price:
The DVDs were vastly overpriced.
somebody can’t afford something someone does not have enough money to buy or do something:
Most people can’t afford to send their children to private schools.

[TahlilGaran] English Thesaurus ▲