American Heritage Dictionary
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Century Dictionary
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GNU Webster's 1913
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WordNet
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Elsewhere on the web
Jack put his belly to the earth and crawled slowly forward--penitent, but determined He broke loose, I reckon.— The Little Shepherd of Kingdom Come
She now became very penitent, and lamented her past life, believing, as she herself affirmed, that God had been afflicting her for her sins.— Gathering Jewels The Secret of a Beautiful Life: In Memoriam of Mr. ; Mrs. James Knowles. Selected from Their Diaries.
Think what might have happened to-night in consequence of your folly Randy looked penitent, and for a wonder accepted the rebuke quietly I forgot, Ned, indeed I did," he said earnestly.— Canoe Boys and Campfires Adventures on Winding Waters
And to a true penitent, as he approaches the throne of mercy, it is a great consolation to be assured that this plea will be allowed.— The Trial and Death of Jesus Christ A Devotional History of our Lord's Passion
Paul looked sufficiently penitent, and Mademoiselle with a playful gesture of absolution spoke again It puts me in a strange and curious mood when I ramble along the shore in the twilight.— High Noon A New Sequel to 'Three Weeks' by Elinor Glyn

American Heritage Dictionary (1)
Century Dictionary (1)
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