Cin·cin·na·tus 
(sĭn′sə-nătəs, -nātəs), Lucius Quinctius 519?-438 BC.
(sĭn′sə-nătəs, -nātəs), Lucius Quinctius 519?-438 BC. Roman statesman who according to tradition was twice called away from his farm to assume the dictatorship of Rome (458 and 439).
- on the coattails of
- on the contrary
- on the cuff
- on the cusp
- on the defensive
- on the dole
- on the dot
- on the double
- on the drawing board
- on the edge
- on the face of it
- on the fence
- on the fly
- on the front burner
- on the go
- on the ground
- on the heels of
- on the hoof
- on the horns of a dilemma
- on the house
- on the increase
- on the inside
- on the job
- on-the-job
- on the level