/ ˈretɪsnt; NAmE / adjective
reticent (about sth) unwilling to tell people about things
SYN reserved , uncommunicative :
She was shy and reticent.
He was extremely reticent about his personal life.
► reti·cence / -sns; NAmE / noun [ U ] ( formal )
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WORD ORIGIN
mid 19th cent.: from Latin reticent- remaining silent, from the verb reticere , from re- (expressing intensive force) + tacere be silent.