Source : Webster's Revised Unabridged Dictionary (1913)

Priggish \Prig"gish\, a.
   Like a prig; conceited; pragmatical. -- {Prig"gish*ly}, adv.
   -- {Prig"gish-ness}, n.

Source : WordNet®

priggish
     adj : exaggeratedly proper; "my straitlaced Aunt Anna doesn't
           approve of my miniskirts" [syn: {prim}, {prissy}, {prudish},
            {puritanical}, {square-toed}, {straitlaced}, {strait-laced},
            {straightlaced}, {straight-laced}, {tight-laced}, {victorian}]