Riddle did not look remotely abashed; he was still staring coldly and appraisingly at Dumbledore.
"Harry’s already Apparated," Ron told a slightly abashed Seamus, after Professor Flitwick had dried himself off with a wave of his wand and set Seamus lines: "I am a wizard, not a baboon brandishing a stick."
’I didn’t —’ mumbled Harry, a little abashed, but Dumbledore cut across him.
There are no more uses of "abashed" in the book.
Show samples from other sources
She was a little abashed, a little nervous: Maybe I’m being silly, but ….
Gillian Flynn -- Gone Girl
’Abashed the Devil stood, And felt how awful goodness is.’