embarrassed /ɪmˈbær.əst/ /ɪmˈbærəst/
ashamed /əˈʃeɪmd/ /əˈʃeɪmd/
modest /ˈmɑːdɪst/ /ˈmɒdɪst/
self-effacing /sɛlf-ɪˈfeɪsɪŋ/ /sɛlf-ɪˈfeɪsɪŋ/
unassuming
reserved /rɪˈzɜrvd/ /rɪˈzɜːvd/