to initiate, to acquaint, to clue in, to let in on (to familiarize thoroughly with something) · to initiate, to acquaint, to clue in, to let in on (to disclose information to someone; to tell somebody a secret or share privileged information) · to get initiated, to get acquainted, to get clued in, to get let in on (to get familiarized thoroughly with something)
insider: a person who is within a certain environment (occupation, group, etc.) · an employee who recommends people that (s)he knows to work in the same company. · connections: people with whom one is acquainted who can offer help and influence
köken: Compound of orang (“person”) + dalam (“inside”), literally “person on the inside”.
köken: From Proto-Albanian *neitša, from Proto-Indo-European *néykʷyeti, related to Lithuanian su-ni̇̀kti (“to set upon, to attack”), Proto-Slavic *niknǫti (“to rise, grow”), and, proposed by some, Ancient Greek νεῖκος (neîkos, “quarrel, struggle”). More likely borrowed from Latin initio.