smoothenverb trans and intrans (smoothened, smoothening)

• penitent
• penitential
• penitentiary
• penknife
• penlight
• penman
• Penn.
• pen name
• pennant
• pennate
• penne
• penni
• penniless
• pennon
• penn'orth
• Pennsylvania Dutch
• Pennsylvania German
• Pennsylvanian
• penny
• -penny
• penny black
• penny dreadful
• penny-farthing
• penny-pinching
• pennyroyal