cop·y·book 
(kŏpē-bk′)
(kŏpē-bk′)n.
An exercise book containing models of penmanship, used in teaching handwriting.
adj.
Unoriginal; trite: used copybook phrases in the essay.
- variability
- variable
- variable annuity
- variable cost
- variable logic
- variableness
- variable-rate mortgage
- variable region
- variable resistor
- variable star
- variably
- variance
- variant
- variate
- variation
- variational
- varic-
- varic-
- variceal
- varicella
- varicella-zoster virus
- varicelloid
- varices
- varico-
- varicocele