SHAMEFACED
guilty, hangdog, shamefaced, shamed
(adjective) showing a sense of guilt; “a guilty look”; “the hangdog and shamefaced air of the retreating enemy”- Eric Linklater
shamefaced, sheepish
(adjective) showing a sense of shame
shamefaced
(adjective) extremely modest or shy; “cheerfully bearing reproaches but shamefaced at praise”- H.O.Taylor
Source: WordNet® 3.1
Etymology
Adjective
shamefaced (comparative more shamefaced, superlative most shamefaced)
Bashful, showing modesty or embarrassment.
Ashamed, displaying shame, especially by blushing in the face.
Source: Wiktionary
Shame"faced`, a. Etym: [For shamefast; AS. scamf. See Shame, n., and
Fast firm.]
Definition: Easily confused or put out of countenance; diffident; bashful;
modest.
Your shamefaced virtue shunned the people's prise. Dryden.
Note: Shamefaced was once shamefast, shamefacedness was
shamefastness, like steadfast and steadfastness; but the ordinary
manifestations of shame being by the face, have brought it to its
present orthography. Trench.
– Shame"faced, adv.
– Shame"faced`ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition