reserved

Definition

Having set aside for a specific purpose; also, describing someone who is quiet and restrained.

हिन्दी किसी विशिष्ट उद्देश्य के लिए आरक्षित; साथ ही, उस व्यक्ति का वर्णन जो शांत और संयमित हो।

Example

"He was too reserved to speak up during the group discussion."