crossword question

[DrPanguitch]

Any help with the missing letters please.
The clue is 'art of speaking or writing effectively' ----OR---

Many thanks in advance

[dr b]

rhetoric makes more sense but rhetoricS? if there really are 3 letters after the OR?

[vegasmad]

http://www.theanswerb.../Question1032226.html

[dr b]

vegasmad, we have created an infinite loop!

[vegasmad]

I was thinking the same thing dr b.

[brian j john]

oratories