1. Post Postscript (a postscript following the first postscript) 
2. [Brit] Parliamentary Private Secretary, Principal Private Secretary

Encyclopedia: PPS

• unchanging
• unchangingness
• unchaperoned
• uncharacteristic
• uncharacteristically
• uncharged
• uncharitable
• uncharitably
• uncharted
• unchartered
• unchaste
• unchastened
• uncheckable
• unchecked
• uncheerful
• uncheerfulness
• unchewable
• unchivalrous
• unchivalrously
• unchristian
• unchristianly
• unchristlike
• unchurch
• uncial
• unciform bone