Being shy around humans can be described in various ways; here are some synonyms that can be used to explain the same condition. Introverted, reticent, timid, bashful, diffident, self-conscious, hesitant, nervous, or reserved. These words can be put to use depending on the level of shyness the person has. Introverted is used to explain someone who keeps to themselves and tends to stay away from social gatherings. On the other hand, bashful and diffident describe someone who is easily embarrassed or lacks confidence in expressing themselves. Being shy could be innate or caused by a traumatic experience, and using synonyms the explain such a condition would help people understand better and communicate effectively.