Definition from Wiktionary, the free dictionary
Alteration (due to folk etymology) of shamefast, from Middle English schamefast, schamfast, sceomefest, from Old English sceamfæst, scamfæst (“bashful, shy, modest”, literally “firm or fast in modesty or shame”), equivalent to shame + fast.
- bashful, showing modesty or embarrassment
- ashamed, displaying shame, especially by blushing in the face.
- Webster's Seventh New Collegiate Dictionary, Springfield, Massachusetts, G.&C. Merriam Co., 1967