Rosalind certainly does expose both her wit and her sense of propriety in many places throughout the play. One example of her using her wit to reference her sense of propriety can be seen in Act 4, Scene 1 when she, pretending to be Ganymede, has Orlando court Ganymede while pretending Ganymede is Rosalind. Early on in the scene, she asks him what he would say to her if she really was Rosalind and he really was wooing her. His response is to say that he would kiss Rosalind before he spoke to her. Rosalind exposes her sense of propriety by warning that he had better talk to her first and then kiss her when words have failed him. A chaste, unmarried noble woman like Rosalind in Shakespeare's day would consider being kissed by any man to be an attack on her virtue; hence, Rosalind is showing her sense of propriety by warning him not to take kissing so lightly. What's more, her warning is very witty in that she relates a lover to good speakers, or orators, who spit when they are out of things to say, as we see in her lines:
Very good orators, when they are out, they will spit; and for lovers lacking--God warn us!--matter, the cleanliest shift is to kiss. (IV.i.75-77)
Another example of Rosalind using her wit to defend her sense of propriety can be seen in her response to Phebe's rejection of Silvius. She openly states that Phebe is being vain, self-absorbed, and cruel to reject Silvius, showing us that Rosalind is very much against this type of behavior. She even tricks Phebe into marrying Silvius by making her promise that if she decides not to marry Ganymede, then she will marry Silvius instead. This trick is an excellent example of Rosalind using her wit and applying it to her sense of propriety.