she was extremely reticent about her personal affairs
either quiet or restrained, retiring, self-effacing, reserved, withdrawn, introverted, inhibited, diffident, shy
ساکت، محتاط در سخن گفتن، کم گو
( Test )
At the start, José Treviño seemed reticent in the spotlight, avoiding reporters by pretending he did not speak good English.
Source: New York Times
In this sentence, reticent means: