IPA: /ɪmˈpɔːrtənt/
KK: /ɪmˈpɔrtənt/
Having great significance or value; something that matters a lot or has a strong effect on a situation.
It is important to study regularly to succeed in school.
Important → It is formed from "importare" (from Latin, meaning to bring in) and the suffix "-ant" (indicating an agent or something that performs an action). The word "important" refers to something that brings in significance or value, hence it is of great significance.
Think of something that 'brings in' ('importare') value or significance — that's why we call it important.