1.  prissy(s = adj.all) priggish, prim, prudish, puritanical, square-toed, straight-laced, straightlaced, strait-laced, straitlaced, tight-laced, victorian - exaggeratedly proper; "my straitlaced Aunt Anna doesn't approve of my miniskirts"

2.  prissy(s = adj.all) dainty, nice, overnice, squeamish - excessively fastidious and easily disgusted; "too nice about his food to take to camp cooking"; "so squeamish he would only touch the toilet handle with his elbow"

prissy, adj. (prissier, prissiest) prim, prudish.

Derivative:
prissily adv. prissiness n.

Etymology:
perh. f. PRIM + SISSY