1. insincere, esp. conventional expressions of enthusiasm for high ideals, goodness, or piety.
2. the private language of the underworld.
3. the phraseology peculiar to a particular class, party, profession, etc.: the cant of the fashion industry.
4. whining or singsong speech, esp. of beggars.
5. to talk hypocritically.
6. to speak in the whining or singsong tone of a beggar; beg.
The cant she was spewing about helping animals was hypocritical considering the leather coat she was wearing.