IPA: /rɪˈkwaɪəd/
KK: /rɪˈkwaɪrd/
Something that is necessary or must be done; it is essential or mandatory.
The required documents must be submitted by the deadline.
Required → It is formed from "re-" (meaning again) and "quaerere" (meaning to seek or ask). The word "required" means something that is sought or asked for again, indicating necessity or obligation.
Think of needing to 'seek' ('quaerere') something 'again' ('re-') — that's why required means something that is necessary.