IPA: /ˈʃeɪmˌfeɪst/
KK: /ˈʃeɪmˌfeɪst/
Feeling or showing shame; embarrassed or modest about something.
He gave a shamefaced apology after realizing his mistake.
Shamefaced → It is formed from "shame" (from Old English *sceamu*, meaning a painful feeling of humiliation or distress) and "faced" (from Old French *face*, meaning the front part of the head). The word "shamefaced" describes someone who has a face showing shame or embarrassment.
Think of someone whose face shows their 'painful feeling' ('shame') — that's why they are described as 'shamefaced'.