1. In the right manner
   "please do your job properly!"
   - decently, decent, in good order, right, the right way 
2. With reason or justice
   - by rights

See also: proper

Antonym: improperly

• percent sign
• percentage
• percentage point
• percentage sign
• percentile
• percept
• perceptibility
• perceptible
• perceptibly
• perception
• perceptive
• perceptively
• perceptiveness
• perceptivity
• perceptual
• perceptual constancy
• perceptual experience
• perceptually
• perch
• perchance
• percher
• Percheron
• perching bird
• perchlorate
• perchloric acid