The term 'Affectedly Proper' can be broken down into two crossword solutions: PRISSY (6 letters) and PRIM (4 letters). PRISSY is an adjective meaning excessively or affectedly neat, precise, or proper. It is derived from the Middle English word pris, which means 'neatly dressed'. PRIM is an adjective meaning excessively proper or precise in manner or behavior. It is derived from the Latin word primus, which means 'FIRST'. Together, these two words describe someone who is overly concerned with appearing proper and precise in their behavior.