can·tor 
(kăntər)
(kăntər)n.
1. The Jewish religious official who leads the musical part of a service.
2. The person who leads a church choir or congregation in singing; a precentor.
[Latin, singer, from canere, to sing; see kan- in the Appendix of Indo-European roots.]
can·tori·al (kăn-tôrē-əl, -tŏr-) adj.
- off-season
- offset
- offset printing
- offshoot
- offshore
- offside
- offsides
- offsite
- off (someone's) back
- off someone's back
- off (someone's) case
- off someone's case
- off-speed
- offspring
- offstage
- off-the-books
- off the cuff
- off-the-cuff
- off the grid
- off-the-grid
- off the ground
- off the hook
- off-the-rack
- off the rack
- off-the-record