IPA: /ɪkˈspɛnsɪv/
KK: /ɪkˈspɛnsɪv/
Costing a lot of money; not cheap.
The new smartphone is very expensive, so I need to save up before I can buy it.
Comparative: more expensive
Superlative: most expensive
Expensive → It is formed from "ex-" (meaning out of or from) and "pendere" (meaning to hang or weigh). The word "expensive" originally referred to something that weighs heavily on one's finances or resources, indicating a high cost.
Think of something that 'hangs heavily' ('pendere') on your budget because it comes 'from' ('ex-') your resources — that's why expensive means it costs a lot.