frog·man 
(frôgmăn′, -mən, frŏg-)
(frôgmăn′, -mən, frŏg-)n.
A swimmer provided with breathing apparatus and other equipment to execute underwater maneuvers, especially military maneuvers.
- speakerphone
- speakership
- speaking
- speaking in tongues
- speaking tube
- speak out
- speak-out
- speak up
- speak with a forked tongue
- categoric
- categorical
- categorical imperative
- categorically
- categoricalness
- categorizable
- categorization
- categorize
- category
- catena
- catenane
- catenary
- catenate
- cater
- cater-corner
- cater-cornered