Idiom Definition:
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"to be in the loop"
to be part of a network which shares information (usually about a specific plan or project)
Synonyms:
abreast, acquainted, apprized, brief, briefed, cognizant, informed, enlighten, enlightened, erudite, expert, familiar, into, know, post, posted, primed, savvy, tuned, up, up-to-date, versant, versed, wise