penitence, n. [contrition], [repentance], [remorse], [compunction]. Antonym: [impenitence].
penitent, a. [contrite], remorseful. Antonyms: [impenitent], incontrite.
penitentiary, n. [prison].
penman, n. calligrapher, calligraphist, chirographer, chirographist, [writer].
penmanship, n. [writing], calligraphy, pencraft, chirography.
pen name. pseudonym, nom de plume.
penniless, a. impecunious, indigent, [destitute]. See poor.
pennilessness, n. impecuniosity, indigence, [poverty], [destitution].
penny, n. cent; groat, stiver; denarius.
penny-a-liner, n. hack, hack [writer].