IPA: /ɪkˈspɛnsɪvnəs/
KK: /ɪkˈspɛnsɪvnəs/
The condition of costing a lot of money or being very high in price.
The expensiveness of the new smartphone surprised many customers.
Expensiveness → It is formed from "expense" (from Latin "expensum", meaning a cost or expenditure) and the suffix "-ness" (meaning the state or quality of). The word "expensiveness" refers to the quality of being costly or requiring a significant amount of money.
Think of the word 'expense' which relates to costs, and remember that 'expensiveness' describes the quality of being costly.