IPA: //klænˈdɛstɪn//
KK: /klænˈdɛstɪn/
Something that is done secretly, often to hide something illegal or wrong.
They held a clandestine meeting to discuss their plans.
Clandestine → It is formed from "clam" (meaning secretly) and "destinare" (meaning to make firm or establish). The word "clandestine" refers to something that is established or done in secret, often to avoid notice or attention.
Think of something being done 'secretly' ('clam') — that's why clandestine means something hidden or secret.